
Prolonged Extreme Cold; Eastern U.S. Winter Storm
Another Arctic blast will surge south across the northern Plains Thursday night, crossing the Midwest and reaching the Gulf Coast Friday night. Confidence continues to increase for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >
Current conditions at
Napa, Napa County Airport (KAPC)
Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.
Clear
42°F
6°C
| Humidity | 100% |
| Wind Speed | NE 5 MPH |
| Barometer | 30.35 in (1027.77 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 39°F (4°C) |
| Last update | 29 Jan 02:54 AM PST |
Extended Forecast for
Lake Berryessa CA
Overnight

Low: 43 °F
Partly Cloudy
Thursday

High: 64 °F
Sunny
Thursday Night

Low: 44 °F
Increasing
CloudsFriday

High: 62 °F
Partly Sunny
Friday Night

Low: 45 °F
Mostly Cloudy
Saturday

High: 63 °F
Partly Sunny
Saturday Night

Low: 47 °F
Mostly Cloudy
Sunday

High: 62 °F
Partly Sunny
Sunday Night

Low: 45 °F
Partly Cloudy
Detailed Forecast
Overnight
Partly cloudy, with a low around 43. Calm wind.
Thursday
Sunny, with a high near 64. Calm wind.
Thursday Night
Increasing clouds, with a low around 44. Calm wind.
Friday
Partly sunny, with a high near 62. Calm wind.
Friday Night
Mostly cloudy, with a low around 45. Calm wind.
Saturday
Partly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 47.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 66.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Lake Berryessa CA
38.57°N 122.24°W (Elev. 732 ft)
38.57°N 122.24°W (Elev. 732 ft)
12:26 am PST Jan 29, 2026
3am PST Jan 29, 2026-6pm PST Feb 4, 2026


