Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains tonight, crossing the Midwest and reaching the Gulf Coast Friday night. Dangerously cold temperatures will persist across the eastern U.S. into early February. There is increasing confidence 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

52°F

11°C

Humidity 80%
Wind Speed N 0 MPH
Barometer 30.37 in (1028.45 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 29 Jan 09:54 AM PST
Extended Forecast for

7 Miles S Lake Berryessa CA

  • Today

    Today: Sunny, with a high near 64. Light northeast wind.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 62. Light northeast wind.

    High: 62 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 63. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 63 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 64. Light northeast wind.
Tonight
Partly cloudy, with a low around 45. Calm wind.
Friday
Partly sunny, with a high near 62. Light northeast wind.
Friday Night
Mostly cloudy, with a low around 45. Calm wind.
Saturday
Partly sunny, with a high near 63. Calm wind becoming east northeast around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Sunny, with a high near 63.
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 65.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles S Lake Berryessa CA
 38.48°N 122.25°W (Elev. 1198 ft)
12:26 am PST Jan 29, 2026
10am PST Jan 29, 2026-6pm PST Feb 4, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database