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

Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Rain

57°F

14°C

Humidity 87%
Wind Speed S 18 MPH
Barometer 29.74 in (1007.11 mb)
Dewpoint 54°F (12°C)
Visibility 7.00 mi
Last update 11 Apr 04:35 PM PDT
Extended Forecast for

Sonoma CA

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. High near 59. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 59 °F

    Showers

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Low around 43. South wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 43 °F

    Showers

  • Sunday

    Sunday: Showers and thunderstorms, mainly before 3pm. High near 59. West southwest wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 59 °F

    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 11pm. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 38. West wind 5 to 8 mph becoming calm in the evening.

    Low: 38 °F

    Chance
    Showers then
    Patchy Fog

  • Monday

    Monday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 65. Calm wind becoming west around 5 mph in the afternoon.

    High: 65 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Areas of fog before 9am. Otherwise, sunny, with a high near 68.

    High: 68 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 40.

    Low: 40 °F

    Clear then
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, sunny, with a high near 68.

    High: 68 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 59. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Low around 43. South wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers and thunderstorms, mainly before 3pm. High near 59. West southwest wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers before 11pm. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 38. West wind 5 to 8 mph becoming calm in the evening.
Monday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 65. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 39.
Tuesday
Areas of fog before 9am. Otherwise, sunny, with a high near 68.
Tuesday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 40.
Wednesday
Patchy fog before 8am. Otherwise, sunny, with a high near 68.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 72.
Thursday Night
Clear, with a low around 43.
Friday
Sunny, with a high near 75.
Friday Night
Mostly clear, with a low around 43.
Saturday
Mostly sunny, with a high near 74.
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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 Apr 11, 2026
Forecast Valid:
4pm PDT Apr 11, 2026-6pm PDT Apr 18, 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