Tracking Areas of Winter Weather and Heavy Rainfall

A cold front will move through the Great Lakes and Northeast U.S. today, bringing areas of snow and snow squalls which can bring rapid reductions to visibility and slick roads. A storm system will shift from the northern Gulf Coast through the Southeast U.S. today through Friday with areas of heavy to excessive rainfall and light snow further north. Heavy snow is also expected in the Rockies. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mist

45°F

7°C

Humidity 85%
Wind Speed E 11 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 41°F (5°C)
Visibility 6.00 mi
Wind Chill39°F (4°C)
Last update 04 Dec 08:54 AM PST
Extended Forecast for

3 Miles NNW Vallejo CA

Coastal Flood Advisory December 4, 09:01am until December 7, 03:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory December 4, 09:01am until December 7, 03:00pm

    NOW until 3:00pm Sun

    Coastal Flood Advisory

  • Today

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 59. East wind around 6 mph becoming calm  in the morning.

    High: 59 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog after midnight.  Otherwise, mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before noon.  Otherwise, mostly sunny, with a high near 59. Light and variable wind.

    High: 59 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog.  Otherwise, partly cloudy, with a low around 46.

    Low: 46 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 61.

    High: 61 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 9pm.  Otherwise, partly cloudy, with a low around 45.

    Low: 45 °F

    Patchy Fog

Detailed Forecast

Today
Sunny, with a high near 56. East wind 9 to 14 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 42. Calm wind.
Friday
Mostly sunny, with a high near 59. East wind around 6 mph becoming calm in the morning.
Friday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 45. Calm wind.
Saturday
Areas of fog before noon. Otherwise, mostly sunny, with a high near 59. Light and variable wind.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 46.
Sunday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 61.
Sunday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 45.
Monday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 61.
Monday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 46.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Vallejo CA
 38.18°N 122.26°W (Elev. 56 ft)
2:09 am PST Dec 4, 2025
9am PST Dec 4, 2025-6pm PST Dec 10, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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