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

Tracking Areas of Fire Weather, Severe Weather, and Winter Weather

Gusty winds and dry conditions will continue to bring fire weather concerns to the southern Plains through Friday. Severe thunderstorms including a few tornadoes, large hail and damaging wind gusts are expected across parts of the Midwest and lower Ohio Valley today. A Pacific storm will bring low elevation rain and thunderstorms across southern California and heavy snow through the Sierra. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

32°F

0°C

Humidity 99%
Wind Speed W 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 19 Feb 07:52 AM PST
Extended Forecast for

17 Miles SSE Agness OR

Winter Weather Advisory February 19, 08:25am until February 19, 10:00am
Winter Storm Warning February 19, 08:25am until February 19, 10:00am
Click here for hazard details and duration
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  •  
    Winter Weather Advisory February 19, 08:25am until February 19, 10:00am
    Winter Storm Warning February 19, 08:25am until February 19, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 37 °F

    Snow Likely

  • Tonight

    Tonight: A chance of snow before 2am, then a chance of snow after 3am. Mostly cloudy, with a low around 24. Light and variable wind. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Chance Snow

  • Friday

    Friday: Snow likely before 1pm, then rain and snow likely. Mostly cloudy, with a high near 38. South wind 5 to 9 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Friday Night

    Friday Night: Rain and snow likely before 7pm, then snow likely between 7pm and 1am, then rain and snow likely after 1am. Mostly cloudy, with a low around 34. South southeast wind 13 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 34 °F

    Rain/Snow
    Likely

  • Saturday

    Saturday: Rain likely, possibly mixed with snow, becoming all rain after 1pm. Snow level 2700 feet rising to 4100 feet in the afternoon. Mostly cloudy, with a high near 45. Southeast wind 16 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: Rain before 1am, then rain, possibly mixed with snow. Snow level 4600 feet. Low around 38. Breezy. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 38 °F

    Breezy. Rain
    then
    Rain/Snow

  • Sunday

    Sunday: Rain. Snow level 5000 feet. High near 45. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 45 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Cloudy, with a low around 44.

    Low: 44 °F

    Rain

Detailed Forecast

Today
Snow likely, mainly before 1pm. Partly sunny, with a high near 37. Light and variable wind becoming northwest 5 to 9 mph in the morning. Chance of precipitation is 70%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
A chance of snow before 2am, then a chance of snow after 3am. Mostly cloudy, with a low around 24. Light and variable wind. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday
Snow likely before 1pm, then rain and snow likely. Mostly cloudy, with a high near 38. South wind 5 to 9 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
Rain and snow likely before 7pm, then snow likely between 7pm and 1am, then rain and snow likely after 1am. Mostly cloudy, with a low around 34. South southeast wind 13 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday
Rain likely, possibly mixed with snow, becoming all rain after 1pm. Snow level 2700 feet rising to 4100 feet in the afternoon. Mostly cloudy, with a high near 45. Southeast wind 16 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday Night
Rain before 1am, then rain, possibly mixed with snow. Snow level 4600 feet. Low around 38. Breezy. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday
Rain. Snow level 5000 feet. High near 45. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Sunday Night
Rain. Cloudy, with a low around 44.
Monday
Rain. Cloudy, with a high near 47.
Monday Night
Rain. Snow level 5400 feet. Cloudy, with a low around 44.
Tuesday
Rain. Snow level 4400 feet. Cloudy, with a high near 46.
Tuesday Night
Rain. Snow level 3800 feet. Mostly cloudy, with a low around 41.
Wednesday
Rain likely. Snow level 3600 feet. Mostly cloudy, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
Last Update:
3:41 am PST Feb 19, 2026
Forecast Valid:
8am PST Feb 19, 2026-6pm PST Feb 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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