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

Late January Extreme Cold; Watching East Coast Storm Threat This Weekend

The next blast of Arctic air surges south down the Plains, across the Great Lakes and through the Southeast and East Friday through Saturday. This could be longest duration of cold in several decades. Forecast models are being closely monitored for potential of another significant winter storm to impact the eastern United States this coming weekend. Confidence in coastal impacts has increased. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10375°NLon: 123.68508°WElev: 1389.0ft.

NA

37°F

3°C

Humidity 98%
Wind Speed NW 1 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 27 Jan 09:52 PM PST
Extended Forecast for

17 Miles SSE Agness OR

  • Tonight

    Tonight: Rain likely, mainly after 2am. Snow level 4600 feet. Mostly cloudy, with a low around 42. South southwest wind around 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely, mainly before 10am. Snow level 5000 feet. Mostly cloudy, with a high near 47. South southwest wind 11 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 47 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely. Snow level 5300 feet. Mostly cloudy, with a low around 43. South wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    Low: 43 °F

    Rain Likely

  • Thursday

    Thursday: A 50 percent chance of rain. Mostly cloudy, with a high near 52. South wind around 9 mph.

    High: 52 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain. Snow level 5500 feet. Mostly cloudy, with a low around 47. South wind around 10 mph.

    Low: 47 °F

    Slight Chance
    Rain

  • Friday

    Friday: A 30 percent chance of rain, mainly after 10am. Snow level 5200 feet rising to 6100 feet in the afternoon. Mostly cloudy, with a high near 54.

    High: 54 °F

    Chance Rain

  • Friday Night

    Friday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A slight chance of rain after 4pm. Partly sunny, with a high near 61.

    High: 61 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain

Detailed Forecast

Tonight
Rain likely, mainly after 2am. Snow level 4600 feet. Mostly cloudy, with a low around 42. South southwest wind around 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely, mainly before 10am. Snow level 5000 feet. Mostly cloudy, with a high near 47. South southwest wind 11 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Wednesday Night
Rain likely. Snow level 5300 feet. Mostly cloudy, with a low around 43. South wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 52. South wind around 9 mph.
Thursday Night
A 20 percent chance of rain. Snow level 5500 feet. Mostly cloudy, with a low around 47. South wind around 10 mph.
Friday
A 30 percent chance of rain, mainly after 10am. Snow level 5200 feet rising to 6100 feet in the afternoon. Mostly cloudy, with a high near 54.
Friday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 46.
Saturday
A slight chance of rain after 4pm. Partly sunny, with a high near 61.
Saturday Night
A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 47.
Sunday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 52.
Sunday Night
Rain likely. Snow level 5200 feet. Mostly cloudy, with a low around 45.
Monday
A chance of rain. Snow level 5100 feet rising to 5600 feet in the afternoon. Partly sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 59.
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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:
9:41 pm PST Jan 27, 2026
Forecast Valid:
10pm PST Jan 27, 2026-6pm PST Feb 3, 2026
 
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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