Weather tomorrow: San Marcos
Forecast for tomorrow, 28 September: overcast. The daily air temperature range is 23 to 35 °C. Chance of precipitation tomorrow according to the daily forecast: 7%. Forecast precipitation amount: 0 mm. Wind from the southeast at 8.6 m/s.
monday 28 september
Overcast
+35°
+23°
Sunset 19:21
G/m activity 2
Precipitation probability 7%
Precipitation 0.0 mm
Wind
8.6 m/s
Pressure 989.3 hPa
Index UV 9
Humidity 57%
Sunrise 07:24
Moon Waning Gibbous
Sunrise 07:24
Sunset 19:21
G/m activity 2
Moon Waning Gibbous
00:00
25°
S
3.6 m/s01:00
24°
S
3.9 m/s02:00
24°
S
3.6 m/s03:00
24°
S
3.3 m/s04:00
23°
S
3.1 m/s05:00
23°
S
2.8 m/s06:00
23°
S
2.2 m/s07:00
23°
S
2.2 m/s08:00
23°
S
1.7 m/s09:00
25°
S
2.2 m/s10:00
27°
S
3.1 m/s11:00
30°
SE
3.9 m/s12:00
31°
SE
4.2 m/s13:00
33°
SE
4.2 m/s14:00
34°
SE
4.4 m/s15:00
35°
SE
4.7 m/s16:00
35°
SE
4.4 m/s17:00
35°
SE
4.2 m/s18:00
34°
SE
5 m/s19:00
30°
SE
6.9 m/s20:00
30°
SE
6.7 m/s21:00
28°
SE
6.7 m/s22:00
26°
SE
6.9 m/s23:00
25°
SE
6.4 m/sWhat is the atmospheric pressure in San Marcos tomorrow?
Pressure adjusted for location elevation. Location elevation: 194 m relative to sea level
Forecast for 28.09.2026 · Local time
Pressure: 986.6–990.6 hPa.
Minimum: 986.6 hPa16:00–21:00
Maximum: 990.6 hPa07:00–12:00
Largest change over 3 hours:
−2.7 hPa · 11:00–14:00
First of 5 intervals with the same change magnitude shown.
hPa · Change over the previous 3 hours
Colours show pressure relative to this day’s range
Lower · 986.6 Scale midpoint · 988.6 Higher · 990.6 Largest change over 3 hoursWhat is the chance of precipitation in San Marcos tomorrow?
Chance of precipitation tomorrow according to the daily forecast: 7%.
Precipitation for tomorrow
| 00:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 15% |
|---|---|---|
| 01:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 18% |
| 02:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 19% |
| 03:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 19% |
| 04:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 17% |
| 05:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 17% |
| 06:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 22% |
| 07:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 10% |
| 08:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 10% |
| 09:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 6% |
| 10:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 3% |
| 11:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 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 (%): 0% |
| 15:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 16:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 2% |
| 17:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 6% |
| 18:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 8% |
| 19:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 10% |
| 20:00 | Amount of precipitation in millimeters (mm): 0.5 mm | Probability of precipitation in percent (%): 40% |
| 21:00 | Amount of precipitation in millimeters (mm): 0.3 mm | Probability of precipitation in percent (%): 36% |
| 22:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 15% |
| 23:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 18% |
San Marcos weather tomorrow: morning, afternoon and evening
Morning: overcast, +23 °C. Afternoon: clear, +31 °C. Evening: overcast, +34 °C.
According to the hourly forecast, tomorrow will be hottest from 15:00 to 17:00, at around +35 °C. Times are local.
Tomorrow's strongest winds are expected at 19:00 (from the southeast); at 22:00 (from the southeast). The lightest winds are expected at 08:00 (from the south). Times are local.
Temperature and wind for tomorrow
What geomagnetic activity is forecast for San Marcos tomorrow?
The highest forecast Kp index for tomorrow is 2.
