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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

58°F

14°C

Humidity 93%
Wind Speed S 4 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 21 Mar 07:54 AM PDT
Extended Forecast for

5 Miles SSE Sonoma CA

  • Today

    Today: Mostly sunny, with a high near 80. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. West wind 5 to 9 mph becoming calm after midnight.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 47. West southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 47 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 77. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 80. Calm wind becoming west 5 to 9 mph in the afternoon.
Tonight
Mostly clear, with a low around 47. West wind 5 to 9 mph becoming calm after midnight.
Sunday
Sunny, with a high near 78. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 47. West southwest wind 5 to 7 mph becoming calm in the evening.
Monday
Sunny, with a high near 77. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Sonoma CA
 38.22°N 122.44°W (Elev. 3 ft)
Last Update:
2:22 am PDT Mar 21, 2026
Forecast Valid:
8am PDT Mar 21, 2026-6pm PDT Mar 27, 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