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

36°F

2°C

Humidity 89%
Wind Speed N 6 MPH
Barometer 30.51 in (1033.19 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 10 Jan 02:54 AM PST
Extended Forecast for

Sonoma CA

Cold Weather Advisory until January 10, 09:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory until January 10, 09:00am

    NOW until 9:00am Sat

    Cold Weather Advisory

  • Overnight

    Low: 36 °F

    Areas Frost

  • Saturday

    Saturday: Areas of frost before 9am. Otherwise, partly sunny, with a high near 56. Calm wind becoming east around 6 mph in the afternoon.

    High: 56 °F

    Areas Frost
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Patchy frost after 4am. Otherwise, mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, mostly sunny, with a high near 57. Light east wind.

    High: 57 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog before 3am, then patchy fog after 5am. Patchy frost after 5am. Otherwise, mostly clear, with a low around 35. Calm wind.

    Low: 35 °F

    Patchy Fog
    then Patchy
    Frost and
    Patchy Fog

  • Monday

    Monday: Patchy fog before 9am. Patchy frost before 8am. Otherwise, sunny, with a high near 57.

    High: 57 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

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

    High: 60 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Overnight
Areas of frost. Otherwise, mostly cloudy, with a steady temperature around 36. Calm wind.
Saturday
Areas of frost before 9am. Otherwise, partly sunny, with a high near 56. Calm wind becoming east around 6 mph in the afternoon.
Saturday Night
Patchy frost after 4am. Otherwise, mostly cloudy, with a low around 36. Calm wind.
Sunday
Areas of frost before 9am. Otherwise, mostly sunny, with a high near 57. Light east wind.
Sunday Night
Patchy fog before 3am, then patchy fog after 5am. Patchy frost after 5am. Otherwise, mostly clear, with a low around 35. Calm wind.
Monday
Patchy fog before 9am. Patchy frost before 8am. Otherwise, sunny, with a high near 57.
Monday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 38.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 60.
Tuesday Night
Patchy fog before midnight, then patchy fog after 4am. 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 43.
Thursday
Sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 43.
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:
12:26 am PST Jan 10, 2026
Forecast Valid:
3am PST Jan 10, 2026-6pm PST Jan 16, 2026
 
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Additional Resources

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Chance of Precipitation