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.

haze

50°F

10°C

Humidity 89%
Wind Speed N 0 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 30 Jan 08:54 AM PST
Extended Forecast for

3 Miles NNW Vallejo CA

Coastal Flood Advisory January 30, 09:12am until February 1, 12:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory January 30, 09:12am until February 1, 12:00pm

    NOW until 12:00pm Sun

    Coastal Flood Advisory

  • Today

    High: 61 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. East northeast wind around 6 mph.

    Low: 43 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 62. East northeast wind 7 to 9 mph.

    High: 62 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 44. Light and variable wind.

    Low: 44 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 7am.  Otherwise, mostly cloudy, with a high near 61. Calm wind becoming west around 6 mph in the afternoon.

    High: 61 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Today
Mostly sunny, with a high near 61. East wind 6 to 8 mph.
Tonight
Mostly cloudy, with a low around 43. East northeast wind around 6 mph.
Saturday
Partly sunny, with a high near 62. East northeast wind 7 to 9 mph.
Saturday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 44. Light and variable wind.
Sunday
Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 61. Calm wind becoming west around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Sunny, with a high near 62.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 64.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Vallejo CA
 38.18°N 122.26°W (Elev. 56 ft)
5:44 am PST Jan 30, 2026
9am 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