Weather tomorrow: Napa County (airport)
Forecast for tomorrow, 28 September: partly cloudy. The daily air temperature range is 10 to 27 °C. Chance of precipitation tomorrow according to the daily forecast: 3%. Forecast precipitation amount: 0 mm. Wind from the west at 5.3 m/s.
monday 28 september
Partly cloudy
+27°
+10°
Sunset 18:56
G/m activity 2
Precipitation probability 3%
Precipitation 0.0 mm
Wind
5.3 m/s
Pressure 1011.9 hPa
Index UV 6
Humidity 60%
Sunrise 07:02
Moon Waning Gibbous
Sunrise 07:02
Sunset 18:56
G/m activity 2
Moon Waning Gibbous
00:00
11°
W
1.7 m/s01:00
11°
W
1.4 m/s02:00
11°
SW
1.4 m/s03:00
11°
W
1.1 m/s04:00
11°
W
0.6 m/s05:00
10°
W
0.3 m/s06:00
11°
W
0.3 m/s07:00
11°
W
0.8 m/s08:00
12°
NW
0.6 m/s09:00
15°
SW
0.3 m/s10:00
18°
SW
1.1 m/s11:00
21°
SW
1.1 m/s12:00
24°
SW
1.9 m/s13:00
26°
SW
2.8 m/s14:00
27°
SW
3.6 m/s15:00
28°
SW
3.9 m/s16:00
26°
SW
5 m/s17:00
25°
SW
5 m/s18:00
23°
W
3.3 m/s19:00
19°
W
2.2 m/s20:00
17°
SW
1.7 m/s21:00
16°
SW
1.9 m/s22:00
15°
SW
1.7 m/s23:00
14°
W
1.7 m/sWhat is the atmospheric pressure in Napa County (airport) tomorrow?
Pressure adjusted for location elevation. Location elevation: 5 m relative to sea level
Forecast for 28.09.2026 · Local time
Pressure: 1007.9–1013.3 hPa.
Minimum: 1007.9 hPa17:00–18:00
Maximum: 1013.3 hPa08:00Also at other hours
Largest change over 3 hours:
−2.7 hPa · 12:00–15:00
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 · 1007.9 Scale midpoint · 1010.6 Higher · 1013.3 Largest change over 3 hoursWhat is the chance of precipitation in Napa County (airport) tomorrow?
Chance of precipitation tomorrow according to the daily forecast: 3%.
Precipitation for tomorrow
| 00:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 12% |
|---|---|---|
| 01:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 12% |
| 02:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 12% |
| 03:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 13% |
| 04:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 13% |
| 05:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 13% |
| 06:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 13% |
| 07:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 13% |
| 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 (%): 5% |
| 10:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 2% |
| 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 (%): 0% |
| 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 (%): 0% |
| 16:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 17:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 9% |
| 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 (%): 1% |
| 20:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 1% |
| 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 (%): 5% |
| 23:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 7% |
Napa County (airport) weather tomorrow: morning, afternoon and evening
Morning: clear, +11 °C. Afternoon: clear, +24 °C. Evening: partly cloudy, +23 °C.
According to the hourly forecast, tomorrow's highest temperature is expected at 15:00, at around +28 °C. Times are local.
Tomorrow's strongest winds are expected from 16:00 to 17:00 (from the southwest). The lightest winds are expected from 05:00 to 06:00 (from the west); at 09:00 (from the southwest). Times are local.
Temperature and wind for tomorrow
What geomagnetic activity is forecast for Napa County (airport) tomorrow?
The highest forecast Kp index for tomorrow is 2.
