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 >

Hazardous Weather Conditions

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

Clear

88°F

31°C

Humidity 29%
Wind Speed S 9 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 20 Mar 04:53 PM PDT
Extended Forecast for

5 Miles SSW Saint Helena CA

Heat Advisory March 20, 05:10pm until March 20, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory March 20, 05:10pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 79. West wind 5 to 10 mph, with gusts as high as 21 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. West wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 76. North northwest wind 5 to 7 mph becoming west southwest in the afternoon.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53. West wind 5 to 7 mph.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 64. West wind around 6 mph.
Saturday
Mostly sunny, with a high near 79. West wind 5 to 10 mph, with gusts as high as 21 mph.
Saturday Night
Clear, with a low around 59. West wind 6 to 9 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 76. North northwest wind 5 to 7 mph becoming west southwest in the afternoon.
Sunday Night
Mostly clear, with a low around 53. West wind 5 to 7 mph.
Monday
Sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Saint Helena CA
 38.44°N 122.5°W (Elev. 1398 ft)
2:07 pm PDT Mar 20, 2026
5pm PDT Mar 20, 2026-6pm PDT Mar 27, 2026
 
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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