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

Tracking Two Storms Impacting the Central and Eastern U.S. Through This Weekend

Two storm systems will track through the central and eastern U.S. through this weekend with areas of gusty winds, rain, and heavy snow. Severe thunderstorms are forecast Friday from the central Gulf Coast into parts of the lower Mississippi, Tennessee and Ohio Valleys. Heavy to excessive rainfall is forecast from the lower Mississippi River Valley to the Tennessee Valley which may bring flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

45°F

7°C

Humidity 53%
Wind Speed NW 10 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 08 Jan 07:54 PM PST
Extended Forecast for

Sonoma CA

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

  • Tonight

    Tonight: Partly cloudy, with a low around 35. North wind around 5 mph becoming calm in the evening.

    Low: 35 °F

    Partly Cloudy

  • Friday

    Friday: Areas of frost before 9am. Otherwise, sunny, with a high near 54. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 54 °F

    Areas Frost
    then Sunny

  • Friday Night

    Friday Night: Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 33. Calm wind.

    Low: 33 °F

    Frost

  • Saturday

    Saturday: Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 54. Calm wind becoming east around 6 mph in the afternoon.

    High: 54 °F

    Frost then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 10am. Patchy frost before 7am. Otherwise, sunny, with a high near 58.

    High: 58 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Tonight
Partly cloudy, with a low around 35. North wind around 5 mph becoming calm in the evening.
Friday
Areas of frost before 9am. Otherwise, sunny, with a high near 54. Calm wind becoming east northeast around 6 mph in the afternoon.
Friday Night
Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 33. Calm wind.
Saturday
Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 54. Calm wind becoming east around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 36. Calm wind.
Sunday
Mostly cloudy, with a high near 56.
Sunday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 36.
Monday
Patchy fog before 10am. Patchy frost before 7am. Otherwise, sunny, with a high near 58.
Monday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 39.
Tuesday
Patchy fog before 10am. Otherwise, sunny, with a high near 60.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Patchy fog. Otherwise, sunny, with a high near 62.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 43.
Thursday
Patchy fog. Otherwise, sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
Last Update:
12:26 pm PST Jan 8, 2026
Forecast Valid:
8pm PST Jan 8, 2026-6pm PST Jan 15, 2026
 
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Additional Resources

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Chance of Precipitation