National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Snow Squalls in the Northeast U.S. on Thursday; Heavy Rain Along the Gulf Coast

An arctic cold front will move through the Great Lakes and Northeast on Thursday, bringing moderate to heavy snow, strong winds, and possible whiteout conditions through Thursday afternoon. A storm system interacting with Gulf moisture will bring moderate to heavy rainfall to the western and central Gulf Coast on Thursday. Isolated instances of flash flooding will be possible. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

43°F

6°C

Humidity 86%
Wind Speed ESE 4 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 39°F (4°C)
Visibility 9.00 mi
Wind Chill41°F (5°C)
Last update 04 Dec 02:00 AM PST
Extended Forecast for

Sonoma CA

Coastal Flood Advisory December 4, 02:29am until December 7, 03:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory December 4, 02:29am until December 7, 03:00pm

    NOW until 3:00pm Sun

    Coastal Flood Advisory

  • Overnight

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 59. Southeast wind 3 to 6 mph.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 62. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog after 9pm. Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before noon. Otherwise, mostly sunny, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 11am. Otherwise, partly sunny, with a high near 64.

    High: 64 °F

    Areas Fog
    then Partly
    Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 38. Calm wind.
Thursday
Sunny, with a high near 59. Southeast wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 40. Calm wind.
Friday
Mostly sunny, with a high near 62. Calm wind becoming west southwest around 5 mph in the afternoon.
Friday Night
Patchy fog after 9pm. Otherwise, mostly clear, with a low around 42. Calm wind.
Saturday
Patchy fog before noon. Otherwise, mostly sunny, with a high near 63.
Saturday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 43.
Sunday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 64.
Sunday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 42.
Monday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 64.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43.
Tuesday
Areas of fog. Otherwise, partly sunny, with a high near 64.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 45.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
Last Update:
2:09 am PST Dec 4, 2025
Forecast Valid:
2am PST Dec 4, 2025-6pm PST Dec 10, 2025
 
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Additional Resources

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Chance of Precipitation