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Hazardous Weather Conditions
Current conditions at
Napa, Napa County Airport (KAPC)
Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.
Clear
88°F
31°C
| Humidity | 31% |
| Wind Speed | SSW 6 MPH |
| Barometer | 29.9 in (1012.53 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Heat Index | 86°F (30°C) |
| Last update | 05 Oct 02:35 PM PDT |
Extended Forecast for
4 Miles E Saint Helena CA
Heat Advisory October 5, 02:52pm until October 8, 10:00pm
NOW until 10:00pm Thu
Heat Advisory
This Afternoon
High: 99 °F
Hot
Tonight
Low: 62 °F
Mostly Clear
Tuesday
High: 99 °F
Hot
Tuesday Night
Low: 59 °F
Mostly Clear
Wednesday
High: 99 °F
Hot
Wednesday Night
Low: 56 °F
Mostly Clear
Thursday
High: 100 °F
Hot
Thursday Night
Low: 58 °F
Clear
Detailed Forecast
This Afternoon
Sunny and hot, with a high near 99. Light west southwest wind.
Tonight
Mostly clear, with a low around 62. Calm wind.
Tuesday
Sunny and hot, with a high near 99. Calm wind becoming south southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 59. Calm wind.
Wednesday
Sunny and hot, with a high near 99. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny and hot, with a high near 100.
Thursday Night
Clear, with a low around 58.
Friday
Sunny and hot, with a high near 96.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Sunny, with a high near 77.
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)
1:26 pm PDT Oct 5, 2026
2pm PDT Oct 5, 2026-6pm PDT Oct 11, 2026
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