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

43°F

6°C

Humidity 99%
Wind Speed SW 1 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 15 Feb 12:52 AM PST
Extended Forecast for

17 Miles SSE Agness OR

Winter Storm Watch February 16, 10:00pm until February 17, 10:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Overnight

    Overnight: A 30 percent chance of rain, mainly between 4am and 5am. Snow level 4900 feet. Mostly cloudy, with a low around 41. Southeast wind around 6 mph.

    Low: 41 °F

    Chance Rain

  • Sunday

    Sunday: Rain. Snow level 5000 feet. High near 46. Northeast wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Snow level 5100 feet lowering to 4300 feet after midnight . Low around 36. East wind around 5 mph becoming light and variable. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F

    Rain

  • Washington's Birthday

    Washington's Birthday: Rain before 10am, then rain and snow. Snow level 3500 feet lowering to 2800 feet in the afternoon . High near 41. South southwest wind 7 to 10 mph becoming north northwest in the morning. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow

  • Monday Night

    Monday Night: Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Some thunder is also possible. Low around 32. Southwest wind 6 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: 32 °F

    Heavy Snow

  • Tuesday

    Tuesday: Snow before 10am, then snow showers between 10am and 1pm, then snow after 1pm. Some thunder is also possible. High near 35. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 35 °F

    Snow

  • Tuesday Night

    Tuesday Night: Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. Some thunder is also possible. Low around 30. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 30 °F

    Snow

  • Wednesday

    Wednesday: Snow. Cloudy, with a high near 36.

    High: 36 °F

    Snow

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Cloudy, with a low around 34.

    Low: 34 °F

    Heavy Snow

Detailed Forecast

Overnight
A 30 percent chance of rain, mainly between 4am and 5am. Snow level 4900 feet. Mostly cloudy, with a low around 41. Southeast wind around 6 mph.
Sunday
Rain. Snow level 5000 feet. High near 46. Northeast wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain. Snow level 5100 feet lowering to 4300 feet after midnight . Low around 36. East wind around 5 mph becoming light and variable. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Washington's Birthday
Rain before 10am, then rain and snow. Snow level 3500 feet lowering to 2800 feet in the afternoon . High near 41. South southwest wind 7 to 10 mph becoming north northwest in the morning. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Monday Night
Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. The snow could be heavy at times. Some thunder is also possible. Low around 32. Southwest wind 6 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. Some thunder is also possible. High near 35. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Tuesday Night
Snow before 10pm, then snow showers between 10pm and 4am, then snow after 4am. Some thunder is also possible. Low around 30. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Snow. Cloudy, with a high near 36.
Wednesday Night
Snow. The snow could be heavy at times. Cloudy, with a low around 34.
Thursday
Snow. Cloudy, with a high near 37.
Thursday Night
Snow. Cloudy, with a low around 30.
Friday
Rain and snow. Cloudy, with a high near 39.
Friday Night
Rain and snow. Mostly cloudy, with a low around 35.
Saturday
Rain and snow. Snow level rising to 2900 feet in the afternoon. Cloudy, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
Last Update:
11:11 pm PST Feb 14, 2026
Forecast Valid:
1am PST Feb 15, 2026-6pm PST Feb 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation