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

55°F

13°C

Humidity 71%
Wind Speed ESE 8 MPH
Barometer 30.36 in (1028.11 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 29 Jan 11:15 AM PST
Extended Forecast for

Sonoma CA

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

    NOW until 12:00pm Sun

    Coastal Flood Advisory

  • Today

    High: 63 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 9pm.  Otherwise, mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 11am.  Otherwise, partly sunny, with a high near 62. Calm wind becoming southeast around 5 mph.

    High: 62 °F

    Areas Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 10am.  Otherwise, partly sunny, with a high near 63. Calm wind becoming east around 5 mph in the afternoon.

    High: 63 °F

    Areas Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 10pm.  Otherwise, mostly cloudy, with a low around 42.

    Low: 42 °F

    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 9am.  Otherwise, mostly cloudy, with a high near 62.

    High: 62 °F

    Areas Fog
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Patchy fog.  Otherwise, partly cloudy, with a low around 40.

    Low: 40 °F

    Patchy Fog

Detailed Forecast

Today
Sunny, with a high near 63. Calm wind.
Tonight
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Friday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 62. Calm wind becoming southeast around 5 mph.
Friday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Saturday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 63. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 42.
Sunday
Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 62.
Sunday Night
Patchy fog. Otherwise, partly cloudy, with a low around 40.
Monday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 64.
Monday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 41.
Wednesday
Areas of fog. Otherwise, mostly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
10:53 am PST Jan 29, 2026
11am 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