Severe Weather Possible from the Central Plains to the Northeast; Building Heat in the West; Fire Weather Concerns for the Southwest

Severe thunderstorms will be possible from the central Plains to the Mid-Atlantic and Northeast on Monday. Hazardous heat will linger across the southern U.S. and build across the West through mid-week. Hot and dry conditions will fuel fire weather concerns for Interior Alaska and the Four Corners region through Monday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10386°NLon: 123.68519°WElev: 1389.0ft.

NA

84°F

29°C

Humidity 15%
Wind Speed N 7 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Heat Index81°F (27°C)
Last update 21 Jun 07:52 PM PDT
Extended Forecast for

17 Miles WNW Illinois Valley OR

Heat Advisory June 22, 11:00am until June 23, 11:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Clear, with a low around 57. North northeast wind 7 to 13 mph becoming east after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 78. East wind 5 to 8 mph becoming calm.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. North northwest wind 6 to 10 mph becoming east northeast after midnight.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. East northeast wind 6 to 11 mph becoming northwest in the afternoon.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 61. Northwest wind 10 to 14 mph becoming northeast after midnight. Winds could gust as high as 18 mph.

    Low: 61 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of rain, mainly after 11pm.  Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance Rain

Detailed Forecast

Tonight
Clear, with a low around 57. North northeast wind 7 to 13 mph becoming east after midnight. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 78. East wind 5 to 8 mph becoming calm.
Monday Night
Mostly clear, with a low around 60. North northwest wind 6 to 10 mph becoming east northeast after midnight.
Tuesday
Sunny, with a high near 77. East northeast wind 6 to 11 mph becoming northwest in the afternoon.
Tuesday Night
Clear, with a low around 61. Northwest wind 10 to 14 mph becoming northeast after midnight. Winds could gust as high as 18 mph.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Clear, with a low around 56.
Thursday
Mostly sunny, with a high near 68.
Thursday Night
A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 51.
Friday
A slight chance of rain. Partly sunny, with a high near 54.
Friday Night
A chance of rain. Mostly cloudy, with a low around 49.
Saturday
A slight chance of rain. Mostly sunny, with a high near 57.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Sunny, with a high near 63.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WNW Illinois Valley OR
 42.2°N 123.98°W (Elev. 3786 ft)
4:40 pm PDT Jun 21, 2026
8pm PDT Jun 21, 2026-6pm PDT Jun 28, 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