Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. 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

90°F

32°C

Humidity 29%
Wind Speed S 3 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 17 Mar 05:20 PM PDT
Extended Forecast for

4 Miles W Saint Helena CA

Heat Advisory March 17, 05:33pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 17, 05:33pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 72 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84. East northeast wind around 5 mph becoming light and variable  in the morning.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 72. West wind around 5 mph becoming light and variable.

    Low: 72 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 86. North northeast wind around 5 mph becoming calm  in the morning.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. West wind around 5 mph becoming north after midnight.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Tonight
Clear, with a low around 72. West northwest wind around 6 mph.
Wednesday
Sunny, with a high near 84. East northeast wind around 5 mph becoming light and variable in the morning.
Wednesday Night
Clear, with a low around 72. West wind around 5 mph becoming light and variable.
Thursday
Sunny, with a high near 86. North northeast wind around 5 mph becoming calm in the morning.
Thursday Night
Mostly clear, with a low around 73. West wind around 5 mph becoming north after midnight.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 71.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 62.
Monday
Mostly sunny, with a high near 70.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Saint Helena CA
 38.52°N 122.55°W (Elev. 1998 ft)
1:49 pm PDT Mar 17, 2026
5pm PDT Mar 17, 2026-6pm PDT Mar 24, 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