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

Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

48°F

9°C

Humidity 78%
Wind Speed SSW 5 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Wind Chill46°F (8°C)
Last update 12 Apr 08:52 PM PDT
Extended Forecast for

Illinois Valley OR

  • Tonight

    Tonight: A slight chance of rain before 1am, then a chance of rain after 2am. Snow level 4500 feet. Mostly cloudy, with a low around 34. Calm wind. Chance of precipitation is 30%.

    Low: 34 °F

    Chance Rain

  • Monday

    Monday: Rain likely, mainly between 10am and 2pm. Snow level 4300 feet rising to 4900 feet in the afternoon. Partly sunny, with a high near 55. Light and variable wind. Chance of precipitation is 60%.

    High: 55 °F

    Rain Likely

  • Monday Night

    Monday Night: A 20 percent chance of rain before 11pm. Snow level 4800 feet lowering to 3900 feet after midnight . Mostly cloudy, with a low around 34. Light and variable wind.

    Low: 34 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Rain, mainly after 11pm. Snow level 4300 feet. Low around 38. South southwest wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain

  • Wednesday

    Wednesday: Rain. High near 51. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 51 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 2am, then a chance of rain and snow between 2am and 5am, then a slight chance of snow after 5am. Snow level 3800 feet lowering to 1800 feet after midnight . Mostly cloudy, with a low around 27. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 27 °F

    Rain Likely
    then Chance
    Rain/Snow

  • Thursday

    Thursday: A slight chance of snow before 8am, then a slight chance of rain between 8am and 11am. Snow level 1600 feet rising to 3300 feet in the afternoon. Sunny, with a high near 55.

    High: 55 °F

    Slight Chance
    Rain/Snow
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of rain before 1am, then a chance of rain after 2am. Snow level 4500 feet. Mostly cloudy, with a low around 34. Calm wind. Chance of precipitation is 30%.
Monday
Rain likely, mainly between 10am and 2pm. Snow level 4300 feet rising to 4900 feet in the afternoon. Partly sunny, with a high near 55. Light and variable wind. Chance of precipitation is 60%.
Monday Night
A 20 percent chance of rain before 11pm. Snow level 4800 feet lowering to 3900 feet after midnight . Mostly cloudy, with a low around 34. Light and variable wind.
Tuesday
Partly sunny, with a high near 57. Calm wind becoming west southwest around 5 mph in the afternoon.
Tuesday Night
Rain, mainly after 11pm. Snow level 4300 feet. Low around 38. South southwest wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain. High near 51. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain likely before 2am, then a chance of rain and snow between 2am and 5am, then a slight chance of snow after 5am. Snow level 3800 feet lowering to 1800 feet after midnight . Mostly cloudy, with a low around 27. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
A slight chance of snow before 8am, then a slight chance of rain between 8am and 11am. Snow level 1600 feet rising to 3300 feet in the afternoon. Sunny, with a high near 55.
Thursday Night
Mostly clear, with a low around 27.
Friday
Sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 41.
Sunday
A chance of rain. Partly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley OR
 42.09°N 123.68°W (Elev. 1394 ft)
Last Update:
4:56 pm PDT Apr 12, 2026
Forecast Valid:
9pm PDT Apr 12, 2026-6pm PDT Apr 19, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation