{"id":254647,"date":"2026-08-22T14:20:22","date_gmt":"2026-08-22T11:20:22","guid":{"rendered":"https:\/\/pogodnik.com\/?p=254647"},"modified":"2026-08-22T14:20:22","modified_gmt":"2026-08-22T11:20:22","slug":"usa-canada-weather-forecast-next-week-august-22-31-2026","status":"publish","type":"post","link":"https:\/\/pogodnik.com\/en\/news\/usa-canada-weather-forecast-next-week-august-22-31-2026","title":{"rendered":"USA &#038; Canada Weather Forecast Next Week: 114\u00b0F Heat, Heavy Rain and Sharp Cooldowns Through August 31, 2026"},"content":{"rendered":"<style>.pogodnik-usa-canada-aug22-31-2026{--bg:#fff;--text:#172033;--muted:#5e6878;--card:#f6f8fb;--border:#d8e0ea;--accent:#155c96;--accent-soft:#eef7ff;--warm:#b75a08;--warm-soft:#fff6eb;--green:#217a52;--green-soft:#edf9f2;max-width:1100px;margin:0 auto;padding:0 14px;background:var(--bg)!important;color:var(--text)!important;font-family:-apple-system,BlinkMacSystemFont,\"Segoe 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.pg-lead,.pogodnik-usa-canada-aug22-31-2026 .pg-note,.pogodnik-usa-canada-aug22-31-2026 .pg-app{padding:17px 18px!important}}<\/style>\n<article class=\"pogodnik-usa-canada-aug22-31-2026\" lang=\"en-US\">\n<h1>USA &amp; Canada Weather Forecast August 22\u201331, 2026: 114\u00b0F Heat, Flooding Rain and a Dramatic Late-Summer Split<\/h1>\n<p class=\"pg-lead\">Late August will look like <strong>three different seasons across North America at the same time<\/strong>.<\/p>\n<p>The Desert Southwest and Texas remain trapped in dangerous heat, with <strong>Phoenix approaching 114\u00b0F (46\u00b0C)<\/strong> and Dallas around <strong>110\u00b0F (43\u00b0C)<\/strong>.<\/p>\n<p>At almost the same time, a much wetter pattern develops farther east. Open-Meteo currently gives New York City close to <strong>1.9 inches (49 mm) of rain on August 27<\/strong>, while Toronto could receive around <strong>1.8 inches (45 mm) on August 23<\/strong>.<\/p>\n<p>And then there is Canada.<\/p>\n<p>Calgary could climb above <strong>91\u00b0F (33\u00b0C)<\/strong> before falling into the upper 60s\u00b0F just two days later. Toronto drops into the mid-60s\u00b0F before returning near 80\u00b0F at the end of the month. Winnipeg has a late-month model signal for almost <strong>1.7 inches (43 mm) of rain in one day<\/strong>.<\/p>\n<p>This is not a simple transition from summer to fall.<\/p>\n<p>Instead, the final ten days of August look increasingly divided between <strong>extreme southern heat, tropical thunderstorms, heavy-rain corridors and abrupt early-fall-like cool shots across parts of Canada and the northern United States<\/strong>.<\/p>\n<p>The forecast below covers <strong>August 22\u201331, 2026<\/strong>, using daily Open-Meteo Forecast API data for major U.S. and Canadian cities with high weather and travel search interest.<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/pogodnik.com\/cdn-cgi\/image\/quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2026\/04\/us-weather-scaled.webp\" alt=\"usa weather forecast\" width=\"2560\" height=\"1433\" class=\"aligncenter size-full wp-image-253265\" srcset=\"https:\/\/pogodnik.com\/cdn-cgi\/image\/quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2026\/04\/us-weather-scaled.webp 2560w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=300,height=168,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2026\/04\/us-weather.webp 300w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=600,height=336,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2026\/04\/us-weather.webp 600w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=768,height=430,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2026\/04\/us-weather.webp 768w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=1536,height=860,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2026\/04\/us-weather.webp 1536w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=2048,height=1146,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2026\/04\/us-weather.webp 2048w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=150,height=84,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2026\/04\/us-weather.webp 150w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/p>\n<h2>USA &amp; Canada weather forecast at a glance<\/h2>\n<div class=\"pg-table-wrap\">\n<table>\n<thead>\n<tr>\n<th>City<\/th>\n<th>Peak high<\/th>\n<th>Coolest daytime high<\/th>\n<th>Wettest day<\/th>\n<th>Strongest gust<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Phoenix<\/strong><\/td>\n<td><strong>114\u00b0F (46\u00b0C)<\/strong> Aug 22<\/td>\n<td>107\u00b0F (42\u00b0C)<\/td>\n<td>Trace<\/td>\n<td><strong>35 mph (57 km\/h)<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Dallas<\/strong><\/td>\n<td><strong>110\u00b0F (43\u00b0C)<\/strong> Aug 24<\/td>\n<td>98\u00b0F (37\u00b0C)<\/td>\n<td>0.17 in (4.2 mm)<\/td>\n<td>33 mph (53 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Houston<\/strong><\/td>\n<td><strong>104\u00b0F (40\u00b0C)<\/strong> Aug 26<\/td>\n<td>91\u00b0F (33\u00b0C)<\/td>\n<td>0.14 in (3.6 mm)<\/td>\n<td>21 mph (35 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Denver<\/strong><\/td>\n<td><strong>100\u00b0F (38\u00b0C)<\/strong> Aug 31<\/td>\n<td>88\u00b0F (31\u00b0C)<\/td>\n<td><strong>0.57 in (14.6 mm)<\/strong><\/td>\n<td>26 mph (41 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Los Angeles<\/strong><\/td>\n<td><strong>99\u00b0F (37\u00b0C)<\/strong> Aug 29<\/td>\n<td>90\u00b0F (32\u00b0C)<\/td>\n<td>0<\/td>\n<td>14 mph (23 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Atlanta<\/strong><\/td>\n<td><strong>94\u00b0F (34\u00b0C)<\/strong> Aug 30<\/td>\n<td>79\u00b0F (26\u00b0C)<\/td>\n<td>0.34 in (8.7 mm)<\/td>\n<td>22 mph (35 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Miami<\/strong><\/td>\n<td><strong>91\u00b0F (33\u00b0C)<\/strong> Aug 22<\/td>\n<td>88\u00b0F (31\u00b0C)<\/td>\n<td><strong>0.52 in (13.3 mm)<\/strong><\/td>\n<td>16 mph (25 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>New York City<\/strong><\/td>\n<td>86\u00b0F (30\u00b0C) Aug 28<\/td>\n<td>75\u00b0F (24\u00b0C)<\/td>\n<td><strong>1.91 in (48.6 mm)<\/strong><\/td>\n<td>29 mph (46 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Chicago<\/strong><\/td>\n<td>86\u00b0F (30\u00b0C) Aug 26<\/td>\n<td>73\u00b0F (23\u00b0C)<\/td>\n<td>0.07 in (1.8 mm)<\/td>\n<td><strong>34 mph (55 km\/h)<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Seattle<\/strong><\/td>\n<td><strong>89\u00b0F (32\u00b0C)<\/strong> Aug 25<\/td>\n<td><strong>66\u00b0F (19\u00b0C)<\/strong> Aug 31<\/td>\n<td>0.05 in (1.2 mm)<\/td>\n<td>18 mph (29 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Calgary<\/strong><\/td>\n<td><strong>91\u00b0F (33\u00b0C)<\/strong> Aug 27<\/td>\n<td><strong>69\u00b0F (20\u00b0C)<\/strong> Aug 29<\/td>\n<td>0.13 in (3.3 mm)<\/td>\n<td><strong>36 mph (59 km\/h)<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Winnipeg<\/strong><\/td>\n<td>86\u00b0F (30\u00b0C) Aug 24<\/td>\n<td>71\u00b0F (22\u00b0C)<\/td>\n<td><strong>1.69 in (42.9 mm)<\/strong> Aug 30<\/td>\n<td>32 mph (52 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Toronto<\/strong><\/td>\n<td>80\u00b0F (27\u00b0C) Aug 31<\/td>\n<td><strong>64\u00b0F (18\u00b0C)<\/strong> Aug 24<\/td>\n<td><strong>1.77 in (45 mm)<\/strong> Aug 23<\/td>\n<td>34 mph (55 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Montreal<\/strong><\/td>\n<td>80\u00b0F (27\u00b0C) Aug 31<\/td>\n<td><strong>64\u00b0F (18\u00b0C)<\/strong> Aug 29<\/td>\n<td>0.43 in (11 mm)<\/td>\n<td>33 mph (53 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Ottawa<\/strong><\/td>\n<td>80\u00b0F (27\u00b0C) Aug 31<\/td>\n<td><strong>64\u00b0F (18\u00b0C)<\/strong> Aug 29<\/td>\n<td>0.39 in (9.9 mm)<\/td>\n<td>30 mph (48 km\/h)<\/td>\n<\/tr>\n<tr>\n<td><strong>Vancouver<\/strong><\/td>\n<td>78\u00b0F (26\u00b0C) Aug 25<\/td>\n<td><strong>64\u00b0F (18\u00b0C)<\/strong> Aug 29<\/td>\n<td><strong>1.22 in (31 mm)<\/strong> Aug 23<\/td>\n<td>20 mph (32 km\/h)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>These are <strong>numerical model forecasts, not official watches or warnings<\/strong>. Thunderstorm rainfall, hail and wind can change substantially as individual systems approach.<\/p>\n<h2>Phoenix weather: the most extreme heat in the forecast<\/h2>\n<p>Phoenix is the clear heat leader.<\/p>\n<p>Open-Meteo gives the city approximately <strong>114\u00b0F (45.8\u00b0C) on August 22<\/strong>, followed by another stretch mostly between <strong>107\u00b0F and 113\u00b0F (42\u201345\u00b0C)<\/strong> through the end of August.<\/p>\n<p>But the daytime heat is only half the story.<\/p>\n<p>Some overnight minimums are extraordinarily high. The model has nighttime temperatures reaching roughly <strong>99\u00b0F (37\u00b0C)<\/strong> around August 26.<\/p>\n<p>That would provide almost no meaningful overnight relief.<\/p>\n<p>Rain is essentially absent, apart from a trace signal on August 24.<\/p>\n<p>For Phoenix, there is currently <strong>no real late-summer break<\/strong> in this forecast period.<\/p>\n<h2>Dallas: 110\u00b0F heat before a temporary break<\/h2>\n<p>Dallas is also facing an exceptional heat signal.<\/p>\n<p>Temperatures climb from around <strong>107\u00b0F (42\u00b0C) on August 22<\/strong> to approximately:<\/p>\n<ul>\n<li><strong>109\u00b0F (43\u00b0C) on August 23<\/strong><\/li>\n<li><strong>110\u00b0F (43\u00b0C) on August 24<\/strong><\/li>\n<li>around <strong>109\u00b0F (43\u00b0C) again August 25\u201326<\/strong><\/li>\n<\/ul>\n<p>Nighttime heat may be nearly as significant, with a minimum close to <strong>90\u00b0F (32\u00b0C) on August 24<\/strong>.<\/p>\n<p>A temporary break arrives around August 27, when the daytime high drops to roughly <strong>98\u00b0F (37\u00b0C)<\/strong> and about <strong>0.17 inch (4 mm)<\/strong> of rainfall appears.<\/p>\n<p>But this is not the end of the heat.<\/p>\n<p>Dallas rebounds toward <strong>104\u00b0F (40\u00b0C) by August 31<\/strong>.<\/p>\n<h2>Houston: 104\u00b0F, then a notable late-week cooldown<\/h2>\n<p>Houston follows a similar pattern, though the break is more noticeable.<\/p>\n<p>Highs rise to approximately:<\/p>\n<ul>\n<li>100\u00b0F (38\u00b0C) Aug 22<\/li>\n<li>102\u00b0F (39\u00b0C) Aug 24<\/li>\n<li>103\u00b0F (40\u00b0C) Aug 25<\/li>\n<li><strong>104\u00b0F (40\u00b0C) Aug 26<\/strong><\/li>\n<\/ul>\n<p>Then temperatures fall sharply to around <strong>91\u00b0F (33\u00b0C) on August 28<\/strong>.<\/p>\n<p>That is a drop of roughly <strong>13\u00b0F (7\u00b0C)<\/strong> from the peak.<\/p>\n<p>Scattered rain returns around August 29\u201330, though the current city-grid totals remain relatively modest.<\/p>\n<h2>Los Angeles: nearly 100\u00b0F and essentially no rain<\/h2>\n<p>Los Angeles remains remarkably hot and dry.<\/p>\n<p>Highs mostly stay in the <strong>mid-to-upper 90s\u00b0F<\/strong>, reaching approximately <strong>99\u00b0F (37\u00b0C) on August 29<\/strong>.<\/p>\n<p>Open-Meteo currently gives <strong>zero measurable precipitation for the entire August 22\u201331 period<\/strong>.<\/p>\n<p>Even more unusual is the nighttime pattern. Several late-August minimum temperatures are modeled in the upper 70s\u00b0F, and locally around <strong>80\u00b0F (27\u00b0C)<\/strong>.<\/p>\n<p>This is a persistent heat signal rather than a short two-day spike.<\/p>\n<h2>Denver: heat, thunderstorms, then almost 100\u00b0F again<\/h2>\n<p>Denver has a very different late-August pattern.<\/p>\n<p>The city starts close to <strong>98\u00b0F (37\u00b0C)<\/strong> on August 22.<\/p>\n<p>Temperatures gradually ease before a much wetter day appears on <strong>August 26<\/strong>, when Open-Meteo gives around <strong>0.57 inch (14.6 mm)<\/strong> of precipitation.<\/p>\n<p>That could include locally heavier convective rainfall, especially given Denver&#8217;s summer thunderstorm climatology.<\/p>\n<p>But after the rain, heat rebuilds.<\/p>\n<p>By August 31 the model pushes Denver back to around <strong>100\u00b0F (37.5\u00b0C)<\/strong>.<\/p>\n<p>So the rain episode looks more like a temporary interruption than the arrival of fall.<\/p>\n<h2>Miami: thunderstorms become the main story<\/h2>\n<p>Miami does not show the extreme daytime heat of Texas or Arizona, but humidity and thunderstorms dominate the forecast.<\/p>\n<p>Highs remain around <strong>88\u201391\u00b0F (31\u201333\u00b0C)<\/strong> almost every day.<\/p>\n<p>The wettest signal is currently August 23 with about <strong>0.52 inch (13 mm)<\/strong> of rain.<\/p>\n<p>August 24 carries a model weather code consistent with a <strong>thunderstorm with hail potential<\/strong>, and additional thunderstorm signals appear later in the week.<\/p>\n<p>This does <strong>not<\/strong> mean hail is guaranteed in Miami. The WMO code is a model-derived weather classification, not a National Weather Service warning.<\/p>\n<p>But the repeated thunderstorm codes clearly indicate a very unstable tropical air mass.<\/p>\n<h2>Atlanta: a 15\u00b0F drop, thunderstorms, then heat returns<\/h2>\n<p>Atlanta has one of the sharper temperature swings in the eastern United States.<\/p>\n<p>The city stays around <strong>92\u201393\u00b0F (33\u201334\u00b0C)<\/strong> through August 25.<\/p>\n<p>Then thunderstorms increase.<\/p>\n<p>August 26 has around <strong>0.17 inch (4.4 mm)<\/strong> of rain, followed by roughly <strong>0.34 inch (8.7 mm) on August 27<\/strong>.<\/p>\n<p>The temperature on August 27 drops to only about <strong>79\u00b0F (26\u00b0C)<\/strong>.<\/p>\n<p>That is roughly <strong>15\u00b0F cooler<\/strong> than the hottest part of the forecast.<\/p>\n<p>But summer quickly returns.<\/p>\n<p>By August 30 Atlanta is back near <strong>94\u00b0F (34\u00b0C)<\/strong>.<\/p>\n<h2>New York City: nearly 2 inches of rain in one day<\/h2>\n<p>New York has one of the strongest rainfall signals in the entire U.S. forecast.<\/p>\n<p>The first several days are relatively quiet, with highs mostly in the upper 70s and lower 80s\u00b0F.<\/p>\n<p>Then the pattern becomes much wetter.<\/p>\n<p>On <strong>August 27<\/strong>, Open-Meteo currently gives around:<\/p>\n<p><strong>1.91 inches of rain \u2014 approximately 49 mm.<\/strong><\/p>\n<p>The WMO weather code is also consistent with intense rain showers.<\/p>\n<p>That amount would be enough to create <strong>urban flooding concerns if a large portion falls within only a few hours<\/strong>.<\/p>\n<p>However, this is still a model forecast several days in advance, not a confirmed flash-flood warning.<\/p>\n<p>Temperatures rise again to about <strong>86\u00b0F (30\u00b0C) on August 28<\/strong> before easing late in the month.<\/p>\n<h2>Chicago: highly changeable with a late thunderstorm signal<\/h2>\n<p>Chicago stays relatively moderate compared with the southern United States.<\/p>\n<p>Highs generally remain in the mid-70s to mid-80s\u00b0F.<\/p>\n<p>The warmest day is currently around <strong>86\u00b0F (30\u00b0C) on August 26<\/strong>.<\/p>\n<p>Then temperatures fall to approximately <strong>73\u00b0F (23\u00b0C) on August 27<\/strong>.<\/p>\n<p>By August 31, the forecast again reaches around <strong>85\u00b0F (29\u00b0C)<\/strong>, but this time accompanied by a <strong>thunderstorm weather code<\/strong> and gusts around <strong>34 mph (55 km\/h)<\/strong>.<\/p>\n<p>That final-day signal deserves monitoring as the forecast window shortens.<\/p>\n<h2>Seattle: 89\u00b0F heat followed by a 23\u00b0F temperature crash<\/h2>\n<p>Seattle may produce one of the largest temperature swings in the forecast.<\/p>\n<p>August 25 reaches approximately <strong>89\u00b0F (32\u00b0C)<\/strong>.<\/p>\n<p>The city then steadily cools:<\/p>\n<p>around 84\u00b0F Aug 26,<\/p>\n<p>80\u00b0F Aug 27,<\/p>\n<p>71\u00b0F Aug 29,<\/p>\n<p>and only <strong>66\u00b0F (19\u00b0C) on August 31<\/strong>.<\/p>\n<p>That is a drop of about <strong>23\u00b0F (13\u00b0C)<\/strong> from the peak.<\/p>\n<p>Rainfall remains very light, so this is primarily a temperature transition rather than a major storm.<\/p>\n<p>For Seattle, the end of August looks much more like an <strong>early-fall air mass<\/strong>.<\/p>\n<h2>Toronto: two days of very heavy rain<\/h2>\n<p>Toronto is currently the standout rainfall hotspot in Canada.<\/p>\n<p>Open-Meteo gives approximately:<\/p>\n<p><strong>0.95 inch (24 mm) on August 22<\/strong>, followed by<\/p>\n<p><strong>1.77 inches (45 mm) on August 23<\/strong>.<\/p>\n<p>That is nearly <strong>2.7 inches (69 mm) in two days<\/strong> at the city grid point.<\/p>\n<p>The August 23 weather code is consistent with very heavy showers.<\/p>\n<p>Temperatures also fall sharply, reaching only around <strong>64\u00b0F (18\u00b0C) on August 24<\/strong>.<\/p>\n<p>Late August then becomes warmer again, eventually reaching around <strong>80\u00b0F (27\u00b0C) on August 31<\/strong>.<\/p>\n<p>Toronto therefore gets a very clear sequence:<\/p>\n<p><strong>heavy rain \u2192 early-fall chill \u2192 late-summer rebound.<\/strong><\/p>\n<h2>Montreal: increasingly unsettled, then a cool late-month break<\/h2>\n<p>Montreal starts warm, close to <strong>79\u00b0F (26\u00b0C)<\/strong> on August 22.<\/p>\n<p>Rain becomes more frequent after that.<\/p>\n<p>Open-Meteo gives about:<\/p>\n<ul>\n<li>0.13 in (3 mm) Aug 23<\/li>\n<li><strong>0.43 in (11 mm) Aug 24<\/strong><\/li>\n<li>0.28 in (7 mm) Aug 25<\/li>\n<li>0.24 in (6 mm) Aug 27<\/li>\n<li>0.28 in (7 mm) Aug 28<\/li>\n<\/ul>\n<p>Gusts could reach approximately <strong>33 mph (53 km\/h)<\/strong> around August 28.<\/p>\n<p>Then temperatures fall to just <strong>64\u00b0F (18\u00b0C) on August 29<\/strong>.<\/p>\n<p>But even here, the cool weather is not permanent: Montreal rebounds to almost <strong>80\u00b0F (27\u00b0C) on August 31<\/strong>.<\/p>\n<h2>Ottawa: September-like mornings before a rapid warm-up<\/h2>\n<p>Ottawa shows a similar but even sharper early-fall signal.<\/p>\n<p>The daytime high drops to around <strong>64\u00b0F (18\u00b0C) on August 29<\/strong>.<\/p>\n<p>The nighttime minimum falls to approximately <strong>48\u00b0F (9\u00b0C)<\/strong>.<\/p>\n<p>That is one of the clearest genuinely cool late-August mornings among the major cities analyzed.<\/p>\n<p>Yet by August 31, the daytime temperature rebounds to around <strong>80\u00b0F (27\u00b0C)<\/strong>.<\/p>\n<p>So eastern Canada is not entering permanent fall \u2014 it is experiencing a strong but temporary cool shot.<\/p>\n<h2>Vancouver: more than an inch of rain, then cooler weather<\/h2>\n<p>Vancouver has a major rainfall signal very early in the period.<\/p>\n<p>On <strong>August 23<\/strong>, Open-Meteo gives around <strong>1.22 inches (31 mm)<\/strong> of rain.<\/p>\n<p>Afterward the weather briefly improves, and August 25 warms to around <strong>78\u00b0F (26\u00b0C)<\/strong>.<\/p>\n<p>Then the Pacific pattern turns cooler again.<\/p>\n<p>By August 29 the daytime high is only about <strong>64\u00b0F (18\u00b0C)<\/strong>, with another smaller rain episode.<\/p>\n<p>Vancouver therefore shifts toward an unmistakably more autumn-like pattern well before inland western Canada does.<\/p>\n<h2>Calgary: 91\u00b0F heat followed by a 22\u00b0F collapse<\/h2>\n<p>Calgary may see one of Canada&#8217;s most dramatic thermal swings.<\/p>\n<p>Temperatures rise to around <strong>84\u00b0F (29\u00b0C) on August 26<\/strong>, then peak near:<\/p>\n<p><strong>91\u00b0F (33\u00b0C) on August 27.<\/strong><\/p>\n<p>Only two days later, the high falls to approximately:<\/p>\n<p><strong>69\u00b0F (20\u00b0C) on August 29.<\/strong><\/p>\n<p>That is a roughly <strong>22\u00b0F (13\u00b0C) drop in two days<\/strong>.<\/p>\n<p>August 23 also has gusts near <strong>36 mph (59 km\/h)<\/strong>.<\/p>\n<p>So Calgary may experience both summer heat and an early-fall transition within the same week.<\/p>\n<h2>Winnipeg: almost 1.7 inches of rain on August 30<\/h2>\n<p>Winnipeg is another Canadian city with a significant late-August rainfall signal.<\/p>\n<p>Temperatures reach around <strong>86\u00b0F (30\u00b0C) on August 24<\/strong>, then fall to approximately 71\u00b0F the following day.<\/p>\n<p>The more important feature comes at the end of the month.<\/p>\n<p>Open-Meteo currently gives approximately:<\/p>\n<p><strong>1.69 inches (43 mm) of rain on August 30.<\/strong><\/p>\n<p>The weather code is consistent with intense showers.<\/p>\n<p>Given the lead time, the exact total is uncertain, but the signal is strong enough to make Winnipeg one of the primary Canadian cities to monitor late in August.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-241513\" src=\"https:\/\/pogodnik.com\/cdn-cgi\/image\/quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2025\/05\/heat-usa.webp\" alt=\"Extreme Heat Warnings: NOAA\" width=\"928\" height=\"650\" srcset=\"https:\/\/pogodnik.com\/cdn-cgi\/image\/quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2025\/05\/heat-usa.webp 928w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=300,height=210,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2025\/05\/heat-usa.webp 300w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=600,height=420,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2025\/05\/heat-usa.webp 600w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=768,height=538,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2025\/05\/heat-usa.webp 768w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=150,height=105,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2025\/05\/heat-usa.webp 150w\" sizes=\"auto, (max-width: 928px) 100vw, 928px\" \/><\/p>\n<h2>The biggest U.S. and Canada weather anomalies before September<\/h2>\n<p>The first and most obvious anomaly is <strong>extreme Southwest heat<\/strong>.<\/p>\n<p>Phoenix remains around 110\u2013114\u00b0F for much of the period, with astonishingly warm nights.<\/p>\n<p>The second is the <strong>Texas heat dome<\/strong>. Dallas reaches roughly 110\u00b0F, Houston about 104\u00b0F, and both cities retain very warm nights.<\/p>\n<p>The third is the <strong>heavy-rain corridor in the Northeast and eastern Canada<\/strong>.<\/p>\n<p>New York has a model signal near <strong>2 inches in one day<\/strong>, Toronto around <strong>1.8 inches<\/strong>, and Montreal receives several separate rain events.<\/p>\n<p>The fourth is the <strong>Canadian temperature roller coaster<\/strong>.<\/p>\n<p>Calgary moves from 91\u00b0F to 69\u00b0F in about two days. Ottawa and Montreal fall to around 64\u00b0F before rebounding close to 80\u00b0F. Toronto experiences a similar pattern.<\/p>\n<p>And the fifth anomaly is the <strong>Pacific Northwest split<\/strong>.<\/p>\n<p>Seattle briefly reaches nearly 90\u00b0F, then falls to the mid-60s\u00b0F by August 31.<\/p>\n<h2>Where will North America be hottest?<\/h2>\n<p>Among the cities analyzed:<\/p>\n<p><strong>Phoenix \u2014 around 114\u00b0F (46\u00b0C)<\/strong><\/p>\n<p><strong>Dallas \u2014 around 110\u00b0F (43\u00b0C)<\/strong><\/p>\n<p><strong>Houston \u2014 around 104\u00b0F (40\u00b0C)<\/strong><\/p>\n<p><strong>Denver \u2014 near 100\u00b0F (38\u00b0C)<\/strong><\/p>\n<p><strong>Los Angeles \u2014 near 99\u00b0F (37\u00b0C)<\/strong><\/p>\n<p>The highest heat risk remains concentrated in the <strong>Desert Southwest, Texas and parts of the interior West<\/strong>.<\/p>\n<h2>Where is the highest rain risk?<\/h2>\n<p>The largest city-scale daily rainfall signals are currently:<\/p>\n<p><strong>New York City \u2014 1.91 in (49 mm), Aug 27<\/strong><\/p>\n<p><strong>Toronto \u2014 1.77 in (45 mm), Aug 23<\/strong><\/p>\n<p><strong>Winnipeg \u2014 1.69 in (43 mm), Aug 30<\/strong><\/p>\n<p><strong>Vancouver \u2014 1.22 in (31 mm), Aug 23<\/strong><\/p>\n<p><strong>Denver \u2014 0.57 in (15 mm), Aug 26<\/strong><\/p>\n<p><strong>Miami \u2014 0.52 in (13 mm), Aug 23<\/strong><\/p>\n<p><strong>Montreal \u2014 0.43 in (11 mm), Aug 24<\/strong><\/p>\n<p>The exact amounts will likely change as these events approach. For thunderstorm rainfall, <strong>timing and hourly intensity matter more than the precise 10-day city-grid total<\/strong>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-230787\" src=\"https:\/\/pogodnik.com\/cdn-cgi\/image\/quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2024\/10\/tablet-weather-app.webp\" alt=\"Weather Forecaster on Tablet\" width=\"1024\" height=\"500\" srcset=\"https:\/\/pogodnik.com\/cdn-cgi\/image\/quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2024\/10\/tablet-weather-app.webp 1024w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=300,height=146,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2024\/10\/tablet-weather-app.webp 300w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=600,height=293,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2024\/10\/tablet-weather-app.webp 600w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=768,height=375,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2024\/10\/tablet-weather-app.webp 768w, https:\/\/pogodnik.com\/cdn-cgi\/image\/width=150,height=73,fit=crop,quality=80,format=auto,onerror=redirect,metadata=none\/wp-content\/uploads\/2024\/10\/tablet-weather-app.webp 150w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<div class=\"pg-app\">\n<h2>Track U.S. and Canada weather with Weather Forecaster<\/h2>\n<p>Use Weather Forecaster to check hourly temperature, rain, wind and changing conditions for your location as the late-August pattern evolves.<\/p>\n<p><a class=\"pg-button\" href=\"https:\/\/pogodnik.com\/en\/en-weather-app\">Open Weather Forecaster<\/a><\/p>\n<\/div>\n<h2>USA &amp; Canada weather forecast: the bottom line<\/h2>\n<p>The final ten days of August 2026 will not behave like a smooth transition toward fall.<\/p>\n<p>In the Southwest and Texas, summer remains extreme.<\/p>\n<p>Phoenix could remain above 110\u00b0F for multiple days, Dallas approaches 110\u00b0F, and Houston reaches around 104\u00b0F.<\/p>\n<p>Farther east, moisture becomes increasingly important. Miami remains stormy, Atlanta sees a thunderstorm-driven cool break, and New York develops one of the strongest heavy-rain signals of the period.<\/p>\n<p>Canada looks dramatically more variable.<\/p>\n<p>Toronto begins with potentially very heavy rain and then briefly turns cool. Calgary moves from 91\u00b0F to the upper 60s\u00b0F in only two days. Vancouver becomes wetter and more autumn-like, while Montreal and Ottawa experience cool late-August days before temperatures rebound.<\/p>\n<p>So September may be approaching, but <strong>North America is entering it from completely different directions<\/strong>.<\/p>\n<p>Arizona and Texas will still feel like midsummer.<\/p>\n<p>Seattle and Vancouver may briefly feel like October.<\/p>\n<p>And across eastern Canada, late August could deliver both heavy rain and the first convincing taste of early fall \u2014 before summer tries to return one more time.<\/p>\n<h2>USA &amp; Canada weather forecast FAQ<\/h2>\n<h3>Will the U.S. have another major heatwave before September?<\/h3>\n<p>Yes. The strongest heat is concentrated in Arizona, Texas and parts of the West. Phoenix may reach around 114\u00b0F, Dallas close to 110\u00b0F and Houston around 104\u00b0F.<\/p>\n<h3>Where is the heaviest rain expected?<\/h3>\n<p>The strongest current city-scale model signals are New York City, Toronto, Winnipeg and Vancouver.<\/p>\n<h3>Will Toronto cool down before September?<\/h3>\n<p>Yes. Toronto may fall to around 64\u00b0F on August 24 after heavy rain, but temperatures could rebound to around 80\u00b0F by August 31.<\/p>\n<h3>Is fall arriving early in Canada?<\/h3>\n<p>Only temporarily in some regions. Vancouver, Calgary, Ottawa, Montreal and Toronto all show cool episodes, but several cities warm sharply again before the end of August.<\/p>\n<h3>Will Phoenix cool down?<\/h3>\n<p>Not significantly during this forecast period. Highs remain mostly above 107\u00b0F, with several days near or above 110\u00b0F.<\/p>\n<h3>Are these official severe-weather warnings?<\/h3>\n<p>No. These are numerical weather-model forecasts. For hurricanes, tornadoes, flash floods, severe thunderstorms and heat emergencies, official alerts from <strong>NWS\/NOAA in the U.S. and Environment and Climate Change Canada<\/strong> should take priority.<\/p>\n<p><strong><a href=\"https:\/\/pogodnik.com\/en\/news\/super-el-nino-2026-2027-forecast\">Super El-Nino 2026<\/a><\/strong><\/p>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>U.S. and Canada weather forecast for Aug 22\u201331, 2026: Phoenix near 114\u00b0F, Dallas near 110\u00b0F, heavy rain in New York and Toronto, and sharp Canadian cool-downs.<\/p>\n","protected":false},"author":1,"featured_media":253265,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[10],"class_list":["post-254647","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-flood","tag-hail","tag-hurricane","tag-noaa-3-3","tag-tornado","tag-weather-forecast","tag-weather-warning"],"acf":[],"wpml_data":{"original_post_id":254647,"trid":"4893783","lang":"en","source_lang":null},"_links":{"self":[{"href":"https:\/\/pogodnik.com\/en\/wp-json\/wp\/v2\/posts\/254647","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pogodnik.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pogodnik.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pogodnik.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pogodnik.com\/en\/wp-json\/wp\/v2\/comments?post=254647"}],"version-history":[{"count":"1","href":"https:\/\/pogodnik.com\/en\/wp-json\/wp\/v2\/posts\/254647\/revisions"}],"predecessor-version":[{"id":254649,"href":"https:\/\/pogodnik.com\/en\/wp-json\/wp\/v2\/posts\/254647\/revisions\/254649"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pogodnik.com\/en\/wp-json\/wp\/v2\/media\/253265"}],"wp:attachment":[{"href":"https:\/\/pogodnik.com\/en\/wp-json\/wp\/v2\/media?parent=254647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pogodnik.com\/en\/wp-json\/wp\/v2\/categories?post=254647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}