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

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

Critical fire weather conditions will persist in the central High Plains through Friday as gusty winds and dry conditions continue. The heat wave across the West and Southwest will continue to intensify through the week, with daily and monthly record highs expected to be broken. 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

75°F

24°C

Humidity 57%
Wind Speed SE 6 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 18 Mar 07:00 PM PDT
Extended Forecast for

5 Miles SSW Saint Helena CA

Heat Advisory March 18, 07:25pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 18, 07:25pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 68 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 87. North northeast wind around 5 mph becoming light and variable in the afternoon.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 68. North wind around 5 mph.

    Low: 68 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 88. North wind around 5 mph becoming calm.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67. West southwest wind around 6 mph becoming northwest after midnight.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 68. West wind around 6 mph becoming north after midnight.
Thursday
Sunny, with a high near 87. North northeast wind around 5 mph becoming light and variable in the afternoon.
Thursday Night
Clear, with a low around 68. North wind around 5 mph.
Friday
Sunny, with a high near 88. North wind around 5 mph becoming calm.
Friday Night
Partly cloudy, with a low around 67. West southwest wind around 6 mph becoming northwest after midnight.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Saint Helena CA
 38.44°N 122.5°W (Elev. 1398 ft)
Last Update:
3:12 pm PDT Mar 18, 2026
Forecast Valid:
7pm PDT Mar 18, 2026-6pm PDT Mar 25, 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