Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

45°F

7°C

Humidity 93%
Wind Speed WNW 3 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 01 Feb 12:10 AM PST
Extended Forecast for

3 Miles NNW Vallejo CA

Coastal Flood Advisory February 1, 12:44am until February 1, 12:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory February 1, 12:44am until February 1, 12:00pm

    NOW until 12:00pm Sun

    Coastal Flood Advisory

  • Overnight

    Low: 43 °F

    Areas Fog

  • Sunday

    Sunday: Areas of fog before 11am.  Otherwise, partly sunny, with a high near 62. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 62 °F

    Areas Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43. Southwest wind around 5 mph becoming light and variable  in the evening.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 64. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Patchy fog between 10pm and 1am.  Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Fog

  • Tuesday

    Tuesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 43. Calm wind.
Sunday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 62. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 43. Southwest wind around 5 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 64. Calm wind becoming west southwest around 5 mph in the afternoon.
Monday Night
Patchy fog between 10pm and 1am. Otherwise, mostly clear, with a low around 42. Calm wind.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 64.
Friday Night
Mostly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Vallejo CA
 38.18°N 122.26°W (Elev. 56 ft)
12:26 am PST Feb 1, 2026
12am PST Feb 1, 2026-6pm PST Feb 7, 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