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

48°F

9°C

Humidity 76%
Wind Speed W 0 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 18 Apr 11:52 PM PDT
Extended Forecast for

Illinois Valley OR

  • Overnight

    Overnight: Mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 10 percent chance of rain after 5pm.  Mostly cloudy, with a high near 70. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 70 °F

    Cloudy then
    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: A chance of rain before 10pm, then a chance of rain after 11pm.  Mostly cloudy, with a low around 41. Southwest wind 5 to 8 mph becoming calm  in the evening.  Chance of precipitation is 30%.

    Low: 41 °F

    Chance Rain

  • Monday

    Monday: Rain, mainly after 11am.  High near 61. Calm wind becoming southwest 5 to 8 mph in the afternoon.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Rain

  • Monday Night

    Monday Night: Rain.  Low around 40. 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: 40 °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 55.

    High: 55 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly before 11pm.  Snow level 5000 feet lowering to 4300 feet after midnight . Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 43. Calm wind.
Sunday
A 10 percent chance of rain after 5pm. Mostly cloudy, with a high near 70. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Sunday Night
A chance of rain before 10pm, then a chance of rain after 11pm. Mostly cloudy, with a low around 41. Southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 30%.
Monday
Rain, mainly after 11am. High near 61. Calm wind becoming southwest 5 to 8 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Rain. Low around 40. 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 55.
Wednesday Night
A chance of rain, mainly before 11pm. Snow level 5000 feet lowering to 4300 feet after midnight . Mostly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 36.
Friday
Sunny, with a high near 72.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 73.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley OR
 42.11°N 123.69°W (Elev. 1398 ft)
11:35 pm PDT Apr 18, 2026
12am PDT Apr 19, 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