Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

61°F

16°C

Humidity 32%
Wind Speed SSW 5 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 18 Apr 08:52 PM PDT
Extended Forecast for

Illinois Valley OR

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. Light south southwest wind.

    Low: 43 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 71. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 71 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 30 percent chance of rain after 11pm.  Mostly cloudy, with a low around 42. Southwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 42 °F

    Chance Rain

  • Monday

    Monday: Rain likely, mainly after 11am.  Mostly cloudy, with a high near 64. Calm wind becoming southwest 5 to 8 mph in the afternoon.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 64 °F

    Rain Likely

  • Monday Night

    Monday Night: Rain.  Low around 41. South southwest wind 5 to 8 mph becoming calm  in the evening.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Rain

  • Tuesday

    Tuesday: Rain likely, then showers and possibly a thunderstorm after 11am.  High near 58. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers

  • Tuesday Night

    Tuesday Night: Rain.  Low around 38. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain

  • Wednesday

    Wednesday: Rain.  Mostly cloudy, with a high near 54.

    High: 54 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly before 11pm.  Snow level 5000 feet lowering to 4100 feet after midnight . Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 43. Light south southwest wind.
Sunday
Mostly cloudy, with a high near 71. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Sunday Night
A 30 percent chance of rain after 11pm. Mostly cloudy, with a low around 42. Southwest wind 5 to 8 mph becoming calm in the evening.
Monday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 64. Calm wind becoming southwest 5 to 8 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Rain. Low around 41. South southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Rain likely, then showers and possibly a thunderstorm after 11am. High near 58. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Rain. Low around 38. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain. Mostly cloudy, with a high near 54.
Wednesday Night
A chance of rain, mainly before 11pm. Snow level 5000 feet lowering to 4100 feet after midnight . Mostly cloudy, with a low around 35.
Thursday
A slight chance of rain. Snow level 3900 feet rising to 5200 feet in the afternoon. Mostly sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 36.
Friday
Sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 72.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley OR
 42.11°N 123.69°W (Elev. 1398 ft)
9:08 pm PDT Apr 18, 2026
9pm PDT Apr 18, 2026-6pm PDT Apr 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database