Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Clear

41°F

5°C

Humidity 100%
Wind Speed N 5 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 30 Jan 01:35 AM PST
Extended Forecast for

3 Miles NNW Lake Berryessa CA

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: Patchy fog between 8am and 9am.  Otherwise, mostly sunny, with a high near 66. Light and variable wind.

    High: 66 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67. Calm wind.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 44. Calm wind.
Friday
Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 66. Light and variable wind.
Friday Night
Partly cloudy, with a low around 41. Calm wind.
Saturday
Partly sunny, with a high near 67. Calm wind.
Saturday Night
Mostly cloudy, with a low around 42. Calm wind.
Sunday
Partly sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 69.
Monday Night
Clear, with a low around 42.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Clear, with a low around 42.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Lake Berryessa CA
 38.61°N 122.28°W (Elev. 554 ft)
1:06 am PST Jan 30, 2026
1am PST Jan 30, 2026-6pm PST Feb 5, 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