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

Tracking Winter Storm and Severe Weather Impacts Through This Weekend

Heavy mountain snow will continue into Thursday afternoon across the Cascades. Two fast moving storms will track from the southern Rockies to the Great Lakes Thursday and then Friday into Sunday with areas of gusty winds, and heavy snow. In the Southeast U.S., severe thunderstorms and heavy to excessive rainfall are forecast on Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

52°F

11°C

Humidity 76%
Wind Speed W 17 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 07 Jan 06:00 PM PST
Extended Forecast for

Sonoma CA

Extreme Cold Watch January 9, 01:00am until January 9, 09:00am
Click here for hazard details and duration
Extreme Cold Watch

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West northwest wind 5 to 8 mph.

    Low: 38 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 52. North wind 3 to 7 mph.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Areas of frost after 5am. Otherwise, partly cloudy, with a low around 35. North wind around 5 mph becoming calm after midnight.

    Low: 35 °F

    Mostly Clear
    then Areas
    Frost

  • Friday

    Friday: Areas of frost before 9am. Otherwise, sunny, with a high near 53. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 53 °F

    Areas Frost
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 5am. Widespread frost, mainly after 4am. Otherwise, partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Clear
    then Frost
    and Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Widespread frost, mainly before 8am. Otherwise, partly sunny, with a high near 54.

    High: 54 °F

    Frost and
    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Patchy fog after 5am. Patchy frost after 5am. Otherwise, partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy
    then Patchy
    Frost and
    Patchy Fog

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West northwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 52. North wind 3 to 7 mph.
Thursday Night
Areas of frost after 5am. Otherwise, partly cloudy, with a low around 35. North wind around 5 mph becoming calm after midnight.
Friday
Areas of frost before 9am. Otherwise, sunny, with a high near 53. Calm wind becoming east northeast around 6 mph in the afternoon.
Friday Night
Patchy fog after 5am. Widespread frost, mainly after 4am. Otherwise, partly cloudy, with a low around 33. Calm wind.
Saturday
Patchy fog before 8am. Widespread frost, mainly before 8am. Otherwise, partly sunny, with a high near 54.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Mostly cloudy, with a high near 56.
Sunday Night
Patchy fog after 5am. Patchy frost after 5am. Otherwise, partly cloudy, with a low around 37.
Monday
Patchy fog before 8am. Patchy frost before 7am. Otherwise, sunny, with a high near 58.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 39.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Patchy fog. Otherwise, sunny, with a high near 61.
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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:
12:26 pm PST Jan 7, 2026
Forecast Valid:
6pm PST Jan 7, 2026-6pm PST Jan 14, 2026
 
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Additional Resources

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Chance of Precipitation