Major Winter Storm in the North-Central U.S.; Severe Weather from the Mid-South to Ohio Valley

A major winter storm will bring a swath of heavy snowfall, strong winds, blizzard conditions and freezing rain to the Northern Plains into the Great Lakes region. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-south to the Ohio Valley and the Southeast. Critical fire weather concerns shift to the southern Rockies and Plains. Read More >

Current conditions at

KF6YUA Sebastopol (AR323)

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

NA

84°F

29°C

Humidity 25%
Wind Speed E 0 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 44°F (7°C)
Visibility NA
Heat Index82°F (28°C)
Last update 15 Mar 02:09 PM PDT
Extended Forecast for

6 Miles SSW Saint Helena CA

Heat Advisory March 16, 10:00am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • This Afternoon

    This Afternoon: Sunny, with a high near 80. North northwest wind around 6 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 61. North wind around 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 85. North wind around 6 mph becoming light and variable  in the afternoon.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 63. Light and variable wind.

    Low: 63 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. Light and variable wind becoming north northeast around 5 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 80. North northwest wind around 6 mph.
Tonight
Partly cloudy, with a low around 61. North wind around 5 mph.
Monday
Sunny, with a high near 85. North wind around 6 mph becoming light and variable in the afternoon.
Monday Night
Clear, with a low around 63. Light and variable wind.
Tuesday
Sunny, with a high near 87. Light and variable wind becoming north northeast around 5 mph.
Tuesday Night
Clear, with a low around 64.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Clear, with a low around 64.
Thursday
Sunny, with a high near 86.
Thursday Night
Clear, with a low around 65.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 63.
Saturday
Mostly sunny, with a high near 80.
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)
1:25 pm PDT Mar 15, 2026
2pm PDT Mar 15, 2026-6pm PDT Mar 21, 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