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

Heavy Snow in the Central/Southern Rockies; Below Average Temperatures in the Central and Eastern US

Moderate to heavy snowfall is expected in the central/southern Rockies and adjacent High Plains today. Lake-enhanced snowfall is expected downwind of the Great Lakes today. Showers and thunderstorms will be possible this evening into tonight across the western Gulf Coast states. Temperatures across much of the central and eastern CONUS will remain below average and chilly to end the week. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

63°F

17°C

Humidity 33%
Wind Speed NNW 9 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 03 Dec 10:35 AM PST
Extended Forecast for

Sonoma CA

Coastal Flood Advisory December 3, 10:57am until December 7, 03:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory December 3, 10:57am until December 7, 03:00pm

    NOW until 3:00pm Sun

    Coastal Flood Advisory

  • Today

    High: 63 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 37. West northwest wind around 5 mph becoming calm after midnight. Winds could gust as high as 18 mph.

    Low: 37 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 60. Light south southeast wind.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. Calm wind.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog. Otherwise, partly cloudy, with a low around 45.

    Low: 45 °F

    Patchy Fog

Detailed Forecast

Today
Mostly sunny, with a high near 63. North northeast wind 13 to 15 mph, with gusts as high as 28 mph.
Tonight
Partly cloudy, with a low around 37. West northwest wind around 5 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Thursday
Mostly sunny, with a high near 60. Light south southeast wind.
Thursday Night
Mostly clear, with a low around 40. Calm wind.
Friday
Sunny, with a high near 64. Calm wind.
Friday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 43.
Saturday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 64.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 45.
Sunday
Areas of fog before noon. Otherwise, partly sunny, with a high near 63.
Sunday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44.
Monday
Areas of fog. Otherwise, mostly sunny, with a high near 65.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44.
Tuesday
Areas of fog. Otherwise, mostly sunny, with a high near 65.
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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:
8:40 am PST Dec 3, 2025
Forecast Valid:
10am PST Dec 3, 2025-6pm PST Dec 9, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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Chance of Precipitation