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

32°F

0°C

Humidity 100%
Wind Speed SW 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 18 Apr 04:52 AM PDT
Extended Forecast for

17 Miles WNW Illinois Valley OR

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 56. Southwest wind 5 to 8 mph.

    High: 56 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 47. South southeast wind around 7 mph.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of rain, mainly after 11am.  Snow level 7000 feet lowering to 6100 feet. Mostly cloudy, with a high near 53. Southwest wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 53 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly after 11pm.  Snow level 7500 feet lowering to 6800 feet after midnight . Mostly cloudy, with a low around 44. West southwest wind 6 to 13 mph becoming east northeast after midnight. Winds could gust as high as 18 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Rain Likely

  • Monday

    Monday: Rain.  Snow level 6300 feet. High near 48. East southeast wind 8 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 48 °F

    Rain

  • Monday Night

    Monday Night: Rain.  Snow level 6500 feet lowering to 5800 feet after midnight . Low around 43. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Rain

  • Tuesday

    Tuesday: Rain before 11am, then showers and possibly a thunderstorm after 11am.  Snow level 5400 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 5200 feet lowering to 4600 feet after midnight . Cloudy, with a low around 41.

    Low: 41 °F

    Rain

  • Wednesday

    Wednesday: Rain.  Snow level 4700 feet. Cloudy, with a high near 42.

    High: 42 °F

    Rain

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 56. Southwest wind 5 to 8 mph.
Tonight
Mostly cloudy, with a low around 47. South southeast wind around 7 mph.
Sunday
A 30 percent chance of rain, mainly after 11am. Snow level 7000 feet lowering to 6100 feet. Mostly cloudy, with a high near 53. Southwest wind 6 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Rain likely, mainly after 11pm. Snow level 7500 feet lowering to 6800 feet after midnight . Mostly cloudy, with a low around 44. West southwest wind 6 to 13 mph becoming east northeast after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain. Snow level 6300 feet. High near 48. East southeast wind 8 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Rain. Snow level 6500 feet lowering to 5800 feet after midnight . Low around 43. 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 5400 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 5200 feet lowering to 4600 feet after midnight . Cloudy, with a low around 41.
Wednesday
Rain. Snow level 4700 feet. Cloudy, with a high near 42.
Wednesday Night
Rain likely, mainly before 11pm. Snow level 4800 feet lowering to 4300 feet after midnight . Mostly cloudy, with a low around 39.
Thursday
A chance of rain. Snow level rising to 5000 feet in the afternoon. Partly sunny, with a high near 48.
Thursday Night
A slight chance of rain. Snow level 5200 feet. Partly cloudy, with a low around 38.
Friday
A slight chance of rain. Snow level 4900 feet rising to 5900 feet in the afternoon. Mostly sunny, with a high near 54.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WNW Illinois Valley OR
 42.18°N 123.98°W (Elev. 4344 ft)
4:40 am PDT Apr 18, 2026
5am PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database