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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

57°F

14°C

Humidity 50%
Wind Speed ESE 11 MPH
Barometer 30.46 in (1031.49 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 10 Jan 01:20 PM PST
Extended Forecast for

Sonoma CA

Cold Weather Advisory January 11, 01:00am until January 11, 09:00am
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 56. East wind around 6 mph.

    High: 56 °F

    Partly Sunny

  • Tonight

    Tonight: Widespread frost, mainly between 1am and 5am. Otherwise, mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy
    then Frost

  • Sunday

    Sunday: Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 57. Calm wind.

    High: 57 °F

    Frost then
    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Partly Cloudy

  • Monday

    Monday: Patchy fog before 10am. Patchy frost before 8am. Otherwise, sunny, with a high near 58. Light east wind.

    High: 58 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 4am. Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost and
    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Patchy frost before 7am. Otherwise, sunny, with a high near 60.

    High: 60 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog between 10pm and midnight. Otherwise, mostly clear, with a low around 40.

    Low: 40 °F

    Patchy Fog
    then Mostly
    Clear

  • Wednesday

    Wednesday: Patchy fog before 10am. Otherwise, sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 56. East wind around 6 mph.
Tonight
Widespread frost, mainly between 1am and 5am. Otherwise, mostly cloudy, with a low around 33. Calm wind.
Sunday
Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 57. Calm wind.
Sunday Night
Partly cloudy, with a low around 36. Calm wind.
Monday
Patchy fog before 10am. Patchy frost before 8am. Otherwise, sunny, with a high near 58. Light east wind.
Monday Night
Patchy fog after 4am. Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.
Tuesday
Patchy fog before 9am. Patchy frost before 7am. Otherwise, sunny, with a high near 60.
Tuesday Night
Patchy fog between 10pm and midnight. Otherwise, mostly clear, with a low around 40.
Wednesday
Patchy fog before 10am. Otherwise, sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 63.
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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:
12:34 pm PST Jan 10, 2026
Forecast Valid:
1pm PST Jan 10, 2026-6pm PST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation