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

Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

75°F

24°C

Humidity 47%
Wind Speed WSW 8 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 17 Oct 03:00 PM PDT
Extended Forecast for

Sonoma CA

  • Tonight

    Tonight: Clear, with a low around 50. West wind 5 to 8 mph becoming calm in the evening.

    Low: 50 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 78. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Light west wind becoming west southwest 5 to 10 mph in the afternoon.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52. West southwest wind 5 to 7 mph becoming north northeast after midnight.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 50. West wind 5 to 8 mph becoming calm in the evening.
Saturday
Sunny, with a high near 78. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 51. North northwest wind 5 to 7 mph becoming calm in the evening.
Sunday
Sunny, with a high near 79. Light west wind becoming west southwest 5 to 10 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 52. West southwest wind 5 to 7 mph becoming north northeast after midnight.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 72.
Wednesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 49.
Thursday
Patchy fog. Otherwise, mostly sunny, with a high near 72.
Thursday Night
Patchy fog. Otherwise, partly cloudy, with a low around 49.
Friday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 67.
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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:
1:26 pm PDT Oct 17, 2025
Forecast Valid:
3pm PDT Oct 17, 2025-6pm PDT Oct 24, 2025
 
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