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

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

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

33°F

1°C

Humidity 99%
Wind Speed W 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 18 Mar 04:52 AM PDT
Extended Forecast for

Illinois Valley OR

  • Today

    Today: Sunny, with a high near 84. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 38. Southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 38 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46. West southwest wind around 5 mph becoming calm in the evening.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 75. Calm wind becoming west around 5 mph in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A 20 percent chance of rain before 11am. Partly sunny, with a high near 63.

    High: 63 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 84. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Tonight
Clear, with a low around 38. Southwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 82. Light and variable wind.
Thursday Night
Mostly clear, with a low around 46. West southwest wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 75. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 44.
Saturday
A 20 percent chance of rain before 11am. Partly sunny, with a high near 63.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 68.
Monday Night
A chance of rain. Mostly cloudy, with a low around 40.
Tuesday
Rain likely. Mostly cloudy, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley OR
 42.11°N 123.69°W (Elev. 1398 ft)
Last Update:
4:41 am PDT Mar 18, 2026
Forecast Valid:
5am PDT Mar 18, 2026-6pm PDT Mar 24, 2026
 
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Additional Resources

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Chance of Precipitation