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

Heavy Rain in the Southern U.S.; Active Weather Continues in Alaska

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains today, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. Another Bering system will impact the Alaskan West Coast and Central Interior through the weekend bringing moderate to heavy snow, high winds, and/or some blizzard conditions. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

42°F

6°C

Humidity 98%
Wind Speed WNW 1 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 14 Feb 09:52 PM PST
Extended Forecast for

11 Miles NNE Happy Camp CA

Winter Storm Warning February 15, 10:00am until February 18, 04:00am
Click here for hazard details and duration
Winter Storm Warning

  • Tonight

    Tonight: A chance of rain and snow before 1am, then snow likely. Snow level 4900 feet. Mostly cloudy, with a low around 32. South wind around 9 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow
    Likely

  • Sunday

    Sunday: Rain, possibly mixed with snow. Snow level rising to 5300 feet in the afternoon. High near 38. South southeast wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow, becoming all snow after 10pm. Low around 33. East southeast wind 8 to 14 mph becoming southwest in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow
    then Snow

  • Washington's Birthday

    Washington's Birthday: Snow. High near 34. West wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 34 °F

    Snow

  • Monday Night

    Monday Night: Snow. The snow could be heavy at times. Low around 26. Southwest wind 13 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    Low: 26 °F

    Heavy Snow

  • Tuesday

    Tuesday: Snow before 10am, then snow showers between 10am and 1pm, then snow after 1pm. The snow could be heavy at times. Some thunder is also possible. High near 28. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    High: 28 °F

    Heavy Snow

  • Tuesday Night

    Tuesday Night: Snow. Low around 20. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 20 °F

    Snow

  • Wednesday

    Wednesday: Snow. Cloudy, with a high near 28.

    High: 28 °F

    Snow

  • Wednesday Night

    Wednesday Night: Snow. Cloudy, with a low around 24.

    Low: 24 °F

    Snow

Detailed Forecast

Tonight
A chance of rain and snow before 1am, then snow likely. Snow level 4900 feet. Mostly cloudy, with a low around 32. South wind around 9 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Sunday
Rain, possibly mixed with snow. Snow level rising to 5300 feet in the afternoon. High near 38. South southeast wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Sunday Night
Rain and snow, becoming all snow after 10pm. Low around 33. East southeast wind 8 to 14 mph becoming southwest in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Washington's Birthday
Snow. High near 34. West wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Monday Night
Snow. The snow could be heavy at times. Low around 26. Southwest wind 13 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Tuesday
Snow before 10am, then snow showers between 10am and 1pm, then snow after 1pm. The snow could be heavy at times. Some thunder is also possible. High near 28. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Tuesday Night
Snow. Low around 20. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Snow. Cloudy, with a high near 28.
Wednesday Night
Snow. Cloudy, with a low around 24.
Thursday
Snow likely. Mostly cloudy, with a high near 30.
Thursday Night
Snow likely. The snow could be heavy at times. Mostly cloudy, with a low around 25.
Friday
Snow. The snow could be heavy at times. Mostly cloudy, with a high near 33.
Friday Night
Snow. Mostly cloudy, with a low around 28.
Saturday
Snow likely. Mostly cloudy, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NNE Happy Camp CA
 41.95°N 123.28°W (Elev. 4839 ft)
Last Update:
9:41 pm PST Feb 14, 2026
Forecast Valid:
10pm PST Feb 14, 2026-6pm PST Feb 21, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation