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

74°F

23°C

Humidity 21%
Wind Speed WSW 6 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 18 Apr 04:52 PM PDT
Extended Forecast for

17 Miles WNW Illinois Valley OR

  • Tonight

    Tonight: Mostly cloudy, with a low around 47. South wind 6 to 13 mph, with gusts as high as 18 mph.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 53. Southwest wind 6 to 16 mph, with gusts as high as 24 mph.

    High: 53 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 40 percent chance of rain.  Snow level 7600 feet lowering to 6500 feet after midnight . Mostly cloudy, with a low around 45. Southwest wind 8 to 14 mph becoming north northeast in the evening. Winds could gust as high as 21 mph.

    Low: 45 °F

    Chance Rain

  • Monday

    Monday: Rain.  Snow level 6400 feet. High near 49. East wind 9 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Rain

  • Monday Night

    Monday Night: Rain.  Snow level 6400 feet lowering to 5800 feet after midnight . Low around 42. West wind 6 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Rain

  • Tuesday

    Tuesday: Rain before 11am, then showers and possibly a thunderstorm after 11am.  Snow level 5500 feet. High near 45. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 45 °F

    Showers

  • Tuesday Night

    Tuesday Night: Rain.  Snow level 5300 feet lowering to 4700 feet after midnight . Low around 41. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Rain

  • Wednesday

    Wednesday: Rain.  Snow level 4600 feet. Cloudy, with a high near 42.

    High: 42 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 5am, then a chance of rain and snow.  Mostly cloudy, with a low around 39.

    Low: 39 °F

    Rain Likely
    then Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 47. South wind 6 to 13 mph, with gusts as high as 18 mph.
Sunday
Mostly cloudy, with a high near 53. Southwest wind 6 to 16 mph, with gusts as high as 24 mph.
Sunday Night
A 40 percent chance of rain. Snow level 7600 feet lowering to 6500 feet after midnight . Mostly cloudy, with a low around 45. Southwest wind 8 to 14 mph becoming north northeast in the evening. Winds could gust as high as 21 mph.
Monday
Rain. Snow level 6400 feet. High near 49. East wind 9 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Rain. Snow level 6400 feet lowering to 5800 feet after midnight . Low around 42. West wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain before 11am, then showers and possibly a thunderstorm after 11am. Snow level 5500 feet. High near 45. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Rain. Snow level 5300 feet lowering to 4700 feet after midnight . Low around 41. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain. Snow level 4600 feet. Cloudy, with a high near 42.
Wednesday Night
Rain likely before 5am, then a chance of rain and snow. Mostly cloudy, with a low around 39.
Thursday
A chance of rain and snow before 8am, then a chance of rain. Snow level rising to 5100 feet in the afternoon. Partly sunny, with a high near 49.
Thursday Night
A slight chance of rain. Snow level 5400 feet. Mostly clear, with a low around 39.
Friday
A slight chance of rain. Snow level 5200 feet rising to 6200 feet in the afternoon. Sunny, with a high near 56.
Friday Night
Mostly clear, with a low around 42.
Saturday
A slight chance of rain. Snow level 6200 feet. Mostly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WNW Illinois Valley OR
 42.18°N 123.98°W (Elev. 4344 ft)
4:41 pm PDT Apr 18, 2026
5pm PDT Apr 18, 2026-6pm PDT Apr 25, 2026
 
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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