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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 >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

41°F

5°C

Humidity 93%
Wind Speed N 5 MPH
Barometer 30.36 in (1028.11 mb)
Dewpoint 39°F (4°C)
Visibility 7.00 mi
Wind Chill38°F (3°C)
Last update 29 Jan 02:20 AM PST
Extended Forecast for

2 Miles N Sonoma CA

Coastal Flood Advisory January 29, 06:00am until February 1, 12:00pm
Click here for hazard details and duration
Coastal Flood Advisory

  • Overnight

    Overnight: Areas of fog. Otherwise, mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Areas Fog

  • Thursday

    Thursday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 62. Calm wind.

    High: 62 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 62. Light east wind.

    High: 62 °F

    Areas Fog
    then Mostly
    Cloudy

  • Friday Night

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

    Low: 40 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 61.

    High: 61 °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

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 38. Calm wind.
Thursday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 62. Calm wind.
Thursday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Friday
Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 62. Light east wind.
Friday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Saturday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 62.
Saturday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 43.
Sunday
Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 61.
Sunday Night
Patchy fog. Otherwise, partly cloudy, with a low around 40.
Monday
Areas of fog before 11am. Otherwise, sunny, with a high near 62.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Sonoma CA
 38.31°N 122.46°W (Elev. 571 ft)
Last Update:
12:26 am PST Jan 29, 2026
Forecast Valid:
2am PST Jan 29, 2026-6pm PST Feb 4, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation