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

Heavy Rain Across the Southern US; Unsettled Pattern in the Pacific Northwest

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains Friday, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. High elevation snow and mixed precipitation and rain in the lower elevations will impact the Pacific Northwest this weekend before a stronger system moves in early next week. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

34°F

1°C

Humidity 98%
Wind Speed SW 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 12 Feb 11:52 PM PST
Extended Forecast for

17 Miles WNW Illinois Valley OR

  • Overnight

    Overnight: Mostly cloudy, with a low around 37. Light southwest wind.

    Low: 37 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after 10am. Mostly cloudy, with a high near 43. South southwest wind 6 to 9 mph.

    High: 43 °F

    Slight Chance
    Snow

  • Friday Night

    Friday Night: A chance of snow before 10pm, then rain, possibly mixed with snow. Snow level rising to 4600 feet after midnight. Low around 37. South southwest wind 8 to 10 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 37 °F

    Chance
    Rain/Snow
    then
    Rain/Snow

  • Saturday

    Saturday: Rain, possibly mixed with snow, becoming all rain after 4pm. Snow level 4500 feet. High near 42. East wind 7 to 11 mph becoming south southwest in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 42 °F

    Rain/Snow

  • Saturday Night

    Saturday Night: Rain, possibly mixed with snow. Snow level 4600 feet. Low around 40. Southwest wind 14 to 16 mph becoming east northeast after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 40 °F

    Rain/Snow

  • Sunday

    Sunday: Rain, possibly mixed with snow before 7am, then snow between 7am and 1pm, then rain, possibly mixed with snow after 1pm. Snow level 4400 feet. High near 44. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Rain likely, possibly mixed with snow before 1am, then a chance of snow. Snow level 4400 feet. Mostly cloudy, with a low around 39. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 39 °F

    Rain/Snow
    Likely

  • Washington's Birthday

    Washington's Birthday: Snow, mainly after 10am. Mostly cloudy, with a high near 42.

    High: 42 °F

    Snow

  • Monday Night

    Monday Night: Snow. The snow could be heavy at times. Cloudy, with a low around 33.

    Low: 33 °F

    Heavy Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 37. Light southwest wind.
Friday
A 20 percent chance of snow after 10am. Mostly cloudy, with a high near 43. South southwest wind 6 to 9 mph.
Friday Night
A chance of snow before 10pm, then rain, possibly mixed with snow. Snow level rising to 4600 feet after midnight. Low around 37. South southwest wind 8 to 10 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Saturday
Rain, possibly mixed with snow, becoming all rain after 4pm. Snow level 4500 feet. High near 42. East wind 7 to 11 mph becoming south southwest in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.
Saturday Night
Rain, possibly mixed with snow. Snow level 4600 feet. Low around 40. Southwest wind 14 to 16 mph becoming east northeast after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday
Rain, possibly mixed with snow before 7am, then snow between 7am and 1pm, then rain, possibly mixed with snow after 1pm. Snow level 4400 feet. High near 44. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday Night
Rain likely, possibly mixed with snow before 1am, then a chance of snow. Snow level 4400 feet. Mostly cloudy, with a low around 39. Chance of precipitation is 70%. Little or no snow accumulation expected.
Washington's Birthday
Snow, mainly after 10am. Mostly cloudy, with a high near 42.
Monday Night
Snow. The snow could be heavy at times. Cloudy, with a low around 33.
Tuesday
Snow. Cloudy, with a high near 34.
Tuesday Night
Snow. The snow could be heavy at times. Cloudy, with a low around 32. Breezy.
Wednesday
Snow. The snow could be heavy at times. Cloudy, with a high near 36. Breezy.
Wednesday Night
Snow. The snow could be heavy at times. Cloudy, with a low around 33. Breezy.
Thursday
Snow. Cloudy, with a high near 36. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WNW Illinois Valley OR
 42.18°N 123.98°W (Elev. 4344 ft)
Last Update:
9:41 pm PST Feb 12, 2026
Forecast Valid:
12am PST Feb 13, 2026-6pm PST Feb 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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