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

Record Heat Remains in Place This Week; Precipitation and Windy Conditions in the Northwest

Record warmth will persist across portions of California, the Southwest U.S., the central Great Basin and spread across the central U.S. for the middle of the week. High temperatures will approach 90 from Texas to the Ohio Valley. A moist frontal system will bring lowland rain, high elevation mountain snow, and breezy winds to the Pacific Northwest into the Northern Rockies through Wednesday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

59°F

15°C

Humidity 13%
Wind Speed SW 7 MPH
Barometer NA
Dewpoint 8°F (-13°C)
Visibility NA
Last update 23 Mar 08:52 PM PDT
Extended Forecast for

Illinois Valley OR

  • Tonight

    Tonight: A chance of rain before 4am, then a slight chance of rain after 5am. Mostly cloudy, with a low around 44. Calm wind. Chance of precipitation is 30%.

    Low: 44 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain likely, mainly after 5pm. Partly sunny, with a high near 66. Calm wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%.

    High: 66 °F

    Slight Chance
    Rain then
    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain, mainly before 4am. Low around 42. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 11am. Snow level 6300 feet lowering to 4300 feet. Mostly cloudy, with a high near 58. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 58 °F

    Rain Likely
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 11pm. Areas of frost after 2am. Snow level 4100 feet lowering to 2200 feet after midnight . Otherwise, partly cloudy, with a low around 29. West northwest wind around 6 mph becoming calm in the evening.

    Low: 29 °F

    Slight Chance
    Rain then
    Areas Frost

  • Thursday

    Thursday: Widespread frost before 11am. Otherwise, sunny, with a high near 63.

    High: 63 °F

    Frost then
    Sunny

  • Thursday Night

    Thursday Night: Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 32.

    Low: 32 °F

    Frost

  • Friday

    Friday: Widespread frost before 8am. Otherwise, sunny, with a high near 75.

    High: 75 °F

    Frost then
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain before 4am, then a slight chance of rain after 5am. Mostly cloudy, with a low around 44. Calm wind. Chance of precipitation is 30%.
Tuesday
Rain likely, mainly after 5pm. Partly sunny, with a high near 66. Calm wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%.
Tuesday Night
Rain, mainly before 4am. Low around 42. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely, mainly before 11am. Snow level 6300 feet lowering to 4300 feet. Mostly cloudy, with a high near 58. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%.
Wednesday Night
A 20 percent chance of rain before 11pm. Areas of frost after 2am. Snow level 4100 feet lowering to 2200 feet after midnight . Otherwise, partly cloudy, with a low around 29. West northwest wind around 6 mph becoming calm in the evening.
Thursday
Widespread frost before 11am. Otherwise, sunny, with a high near 63.
Thursday Night
Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 32.
Friday
Widespread frost before 8am. Otherwise, sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 39.
Monday
A chance of rain. Partly sunny, with a high near 65.
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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:
8:51 pm PDT Mar 23, 2026
Forecast Valid:
9pm PDT Mar 23, 2026-6pm PDT Mar 30, 2026
 
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Additional Resources

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Chance of Precipitation