Weather tomorrow: Portland-Troutdale (airport)
Forecast for tomorrow, 28 September: overcast. The daily air temperature range is 8 to 20 °C. Chance of precipitation tomorrow according to the daily forecast: 5%. Forecast precipitation amount: 0 mm. Wind from the northeast at 1.7 m/s.
monday 28 september
Overcast
+20°
+8°
Sunset 18:55
G/m activity 2
Precipitation probability 5%
Precipitation 0.0 mm
Wind
1.7 m/s
Pressure 1017.2 hPa
Index UV 4
Humidity 54%
Sunrise 07:04
Moon Waning Gibbous
Sunrise 07:04
Sunset 18:55
G/m activity 2
Moon Waning Gibbous
00:00
11°
N
0.6 m/s01:00
11°
NE
0.6 m/s02:00
10°
N
0.3 m/s03:00
9°
NW
0.3 m/s04:00
9°
SE
0.8 m/s05:00
8°
N
0.3 m/s06:00
8°
NE
0.6 m/s07:00
8°
E
0.3 m/s08:00
8°
E
0.8 m/s09:00
10°
SE
0.3 m/s10:00
12°
NW
0.8 m/s11:00
15°
NW
1.1 m/s12:00
17°
W
0.8 m/s13:00
19°
W
1.4 m/s14:00
19°
NW
1.7 m/s15:00
20°
NW
1.4 m/s16:00
20°
W
1.4 m/s17:00
20°
W
0.8 m/s18:00
18°
SW
0.3 m/s19:00
17°
SE
0.8 m/s20:00
16°
SE
0.8 m/s21:00
14°
E
0.8 m/s22:00
13°
SE
1.1 m/s23:00
13°
SE
0.8 m/sWhat is the atmospheric pressure in Portland-Troutdale (airport) tomorrow?
Pressure adjusted for location elevation. Location elevation: 8 m relative to sea level
Forecast for 28.09.2026 · Local time
Pressure: 1014.6–1018.6 hPa.
Minimum: 1014.6 hPa00:00Also at other hours
Maximum: 1018.6 hPa07:00–12:00
Largest change over 3 hours:
+2.7 hPa · 00:00–03:00
First of 4 intervals with the same change magnitude shown.
hPa · Change over the previous 3 hours
Colours show pressure relative to this day’s range
Lower · 1014.6 Scale midpoint · 1016.6 Higher · 1018.6 Largest change over 3 hoursWhat is the chance of precipitation in Portland-Troutdale (airport) tomorrow?
Chance of precipitation tomorrow according to the daily forecast: 5%.
Precipitation for tomorrow
| 00:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 5% |
|---|---|---|
| 01:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 6% |
| 02:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 7% |
| 03:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 8% |
| 04:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 24% |
| 05:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 10% |
| 06:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 17% |
| 07:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 25% |
| 08:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 23% |
| 09:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 18% |
| 10:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 7% |
| 11:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 6% |
| 12:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 13:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 14:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 2% |
| 15:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 9% |
| 16:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 10% |
| 17:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 10% |
| 18:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 19:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 2% |
| 20:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 2% |
| 21:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 3% |
| 22:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 6% |
| 23:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 9% |
Portland-Troutdale (airport) weather tomorrow: morning, afternoon and evening
Morning: partly cloudy, +8 °C. Afternoon: partly cloudy, +17 °C. Evening: partly cloudy, +18 °C.
According to the hourly forecast, tomorrow's highest temperature is expected from 15:00 to 17:00, at around +20 °C. Times are local.
Tomorrow's strongest winds are expected at 14:00 (from the northwest). Times are local.
Temperature and wind for tomorrow
What geomagnetic activity is forecast for Portland-Troutdale (airport) tomorrow?
The highest forecast Kp index for tomorrow is 2.
