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

36°F

2°C

Humidity 99%
Wind Speed NE 0 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 28 Jan 04:52 AM PST
Extended Forecast for

16 Miles SE Agness OR

  • Overnight

    Overnight: A 20 percent chance of rain. Mostly cloudy, with a low around 43. South southeast wind around 8 mph.

    Low: 43 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A 40 percent chance of rain, mainly after 8am. Mostly cloudy, with a high near 53. Southeast wind around 9 mph becoming southwest in the afternoon.

    High: 53 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain, mainly between 9pm and 4am. Mostly cloudy, with a low around 45. South wind around 9 mph.

    Low: 45 °F

    Chance Rain

  • Thursday

    Thursday: A 20 percent chance of rain before 10am. Mostly cloudy, with a high near 57. South wind around 7 mph.

    High: 57 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 47. South wind around 7 mph.

    Low: 47 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of rain after 10am. Partly sunny, with a high near 61.

    High: 61 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain

Detailed Forecast

Overnight
A 20 percent chance of rain. Mostly cloudy, with a low around 43. South southeast wind around 8 mph.
Wednesday
A 40 percent chance of rain, mainly after 8am. Mostly cloudy, with a high near 53. Southeast wind around 9 mph becoming southwest in the afternoon.
Wednesday Night
A 50 percent chance of rain, mainly between 9pm and 4am. Mostly cloudy, with a low around 45. South wind around 9 mph.
Thursday
A 20 percent chance of rain before 10am. Mostly cloudy, with a high near 57. South wind around 7 mph.
Thursday Night
Mostly cloudy, with a low around 47. South wind around 7 mph.
Friday
A 20 percent chance of rain after 10am. Partly sunny, with a high near 61.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
Partly sunny, with a high near 62.
Saturday Night
A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 46.
Sunday
Rain likely. Mostly cloudy, with a high near 54.
Sunday Night
Rain likely. Mostly cloudy, with a low around 43.
Monday
A chance of rain. Partly sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SE Agness OR
 42.38°N 123.82°W (Elev. 1316 ft)
Last Update:
3:40 am PST Jan 28, 2026
Forecast Valid:
5am PST Jan 28, 2026-6pm PST Feb 3, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation