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 Chill39°F (4°C)
Last update 29 Jan 02:54 AM PST
Extended Forecast for

Lake Berryessa CA

  • Overnight

    Overnight: Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 64. Calm wind.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 44. Calm wind.

    Low: 44 °F

    Increasing
    Clouds

  • Friday

    Friday: Partly sunny, with a high near 62. Calm 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.

    High: 63 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47.

    Low: 47 °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

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.
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Berryessa CA
 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
 
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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