Fire Weather Concerns West; Thunderstorms in the Upper Midwest
Dry and breezy conditions will enhance fire weather concerns across portions of the northern and central High Plains through Saturday, where fuels remain largely receptive. Severe thunderstorms are possible across portions of central Nebraska to the Upper Midwest this Friday afternoon into tonight. Read More >
Current conditions at
Napa, Napa County Airport (KAPC)
Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.
Clear
64°F
18°C
| Humidity | 72% |
| Wind Speed | SSW 16 MPH |
| Barometer | 29.9 in (1012.53 mb) |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 10 Sep 09:35 PM PDT |
Extended Forecast for
4 Miles E Saint Helena CA
Tonight
Low: 55 °F
Mostly Clear
Friday
High: 88 °F
Sunny
Friday Night
Low: 54 °F
Mostly Clear
Saturday
High: 81 °F
Mostly Sunny
Saturday Night
Low: 50 °F
Mostly Clear
Sunday
High: 81 °F
Sunny
Sunday Night
Low: 52 °F
Mostly Clear
Monday
High: 85 °F
Sunny
Monday Night
Low: 51 °F
Mostly Clear
then Patchy
Fog
Detailed Forecast
Tonight
Mostly clear, with a low around 55. Light and variable wind.
Friday
Sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 54. Calm wind.
Saturday
Mostly sunny, with a high near 81. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
Mostly clear, with a low around 50. West northwest wind 5 to 10 mph, with gusts as high as 28 mph.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 85.
Monday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 51.
Tuesday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 82.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 51.
Wednesday
Areas of fog. Otherwise, mostly sunny, with a high near 79.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 50.
Thursday
Areas of fog. Otherwise, mostly sunny, with a high near 79.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles E Saint Helena CA
38.5°N 122.4°W (Elev. 476 ft)
38.5°N 122.4°W (Elev. 476 ft)
8:42 pm PDT Sep 10, 2026
9pm PDT Sep 10, 2026-6pm PDT Sep 17, 2026
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