Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

41°F

5°C

Humidity 99%
Wind Speed SSW 1 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 22 Apr 01:52 AM PDT
Extended Forecast for

Illinois Valley OR

  • Overnight

    Overnight: A 30 percent chance of rain, mainly after 4am.  Snow level 4200 feet. Mostly cloudy, with a steady temperature around 40. South southwest wind 3 to 5 mph.

    Low: 40 °F

    Chance Rain

  • Wednesday

    Wednesday: A 40 percent chance of rain between 11am and 3pm.  Snow level 4200 feet rising to 4800 feet in the afternoon. Partly sunny, with a high near 57. West southwest wind 5 to 9 mph.

    High: 57 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 68. Light north northeast wind.

    High: 68 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 34. North northeast wind 3 to 5 mph.

    Low: 34 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of rain after 11am.  Sunny, with a high near 67.

    High: 67 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A slight chance of rain before 11pm.  Partly cloudy, with a low around 37.

    Low: 37 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of rain, mainly after 4am. Snow level 4200 feet. Mostly cloudy, with a steady temperature around 40. South southwest wind 3 to 5 mph.
Wednesday
A 40 percent chance of rain between 11am and 3pm. Snow level 4200 feet rising to 4800 feet in the afternoon. Partly sunny, with a high near 57. West southwest wind 5 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 33. West southwest wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 68. Light north northeast wind.
Thursday Night
Clear, with a low around 34. North northeast wind 3 to 5 mph.
Friday
Sunny, with a high near 72.
Friday Night
Mostly clear, with a low around 37.
Saturday
A slight chance of rain after 11am. Sunny, with a high near 67.
Saturday Night
A slight chance of rain before 11pm. Partly cloudy, with a low around 37.
Sunday
A chance of rain, mainly after 11am. Mostly sunny, with a high near 59.
Sunday Night
A slight chance of rain. Partly cloudy, with a low around 38.
Monday
A chance of rain. Mostly sunny, with a high near 63.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 38.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley OR
 42.09°N 123.68°W (Elev. 1394 ft)
12:41 am PDT Apr 22, 2026
2am PDT Apr 22, 2026-6pm PDT Apr 28, 2026
 
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Additional Resources

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Hourly Weather Forecast

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