Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Hazardous Weather Conditions

Current conditions at

KF6YUA Sebastopol (AR323)

Lat: 38.38033°NLon: 122.82367°WElev: 235.3ft.

NA

90°F

32°C

Humidity 34%
Wind Speed NNE 0 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 58°F (14°C)
Visibility NA
Heat Index89°F (32°C)
Last update 19 Mar 03:39 PM PDT
Extended Forecast for

6 Miles SSW Saint Helena CA

Heat Advisory March 19, 03:52pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 19, 03:52pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 67 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. West wind around 5 mph.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 79. West northwest wind 5 to 8 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 67. Light and variable wind becoming north around 5 mph.
Friday
Sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 62. West wind around 5 mph.
Saturday
Mostly sunny, with a high near 79. West northwest wind 5 to 8 mph.
Saturday Night
Mostly clear, with a low around 56. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Sunny, with a high near 75.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSW Saint Helena CA
 38.42°N 122.49°W (Elev. 1627 ft)
2:37 pm PDT Mar 19, 2026
3pm PDT Mar 19, 2026-6pm PDT Mar 26, 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