Heavy Precipitation in the West; Wintry Mix in the North; Fire Weather in the High Plains

Pacific moisture will continue to bring locally heavy coastal/lower elevation rain and heavy mountain snow to the West Coast and portions of the Intermountain West through Monday. A wintry mix will create hazardous travel across the northern Plains and Upper Midwest into early Monday. Dry, gusty winds are resulting in elevated to critical fire weather in the south/central High Plains. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

43°F

6°C

Humidity 84%
Wind Speed WSW 4 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Wind Chill41°F (5°C)
Last update 04 Jan 05:52 PM PST
Extended Forecast for

16 Miles SE Agness OR

  • Tonight

    Tonight: Rain and snow, mainly before 2am.  Snow level 3800 feet lowering to 3300 feet after midnight . Low around 36. South wind 5 to 8 mph becoming light and variable  after midnight.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain/Snow

  • Monday

    Monday: Rain likely before 1pm, then a slight chance of rain after 4pm.  Snow level 3200 feet rising to 3700 feet in the afternoon. Partly sunny, with a high near 41. East wind 3 to 5 mph.  Chance of precipitation is 60%.

    High: 41 °F

    Rain Likely
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A 20 percent chance of rain before 10pm.  Snow level 3600 feet. Partly cloudy, with a low around 34. East southeast wind 3 to 7 mph.

    Low: 34 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Tuesday

    Tuesday: Rain, mainly after 4pm.  Snow level 3900 feet. High near 42. Southwest wind 5 to 9 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 42 °F

    Chance Rain
    then Rain

  • Tuesday Night

    Tuesday Night: Rain.  Snow level 4100 feet. Low around 38. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Rain

  • Wednesday

    Wednesday: Rain, possibly mixed with snow, becoming all rain after 1pm.  Snow level 3500 feet. High near 41. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain before 7pm, then rain and snow.  Snow level 3000 feet. Low around 36. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain/Snow

  • Thursday

    Thursday: Rain likely, possibly mixed with snow, mainly before 10am.  Snow level 3100 feet. Mostly cloudy, with a high near 41.

    High: 41 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of rain before 1am, then a slight chance of rain and snow.  Snow level 3300 feet. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Rain and snow, mainly before 2am. Snow level 3800 feet lowering to 3300 feet after midnight . Low around 36. South wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday
Rain likely before 1pm, then a slight chance of rain after 4pm. Snow level 3200 feet rising to 3700 feet in the afternoon. Partly sunny, with a high near 41. East wind 3 to 5 mph. Chance of precipitation is 60%.
Monday Night
A 20 percent chance of rain before 10pm. Snow level 3600 feet. Partly cloudy, with a low around 34. East southeast wind 3 to 7 mph.
Tuesday
Rain, mainly after 4pm. Snow level 3900 feet. High near 42. Southwest wind 5 to 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain. Snow level 4100 feet. Low around 38. South southwest wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain, possibly mixed with snow, becoming all rain after 1pm. Snow level 3500 feet. High near 41. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday Night
Rain before 7pm, then rain and snow. Snow level 3000 feet. Low around 36. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday
Rain likely, possibly mixed with snow, mainly before 10am. Snow level 3100 feet. Mostly cloudy, with a high near 41.
Thursday Night
A chance of rain before 1am, then a slight chance of rain and snow. Snow level 3300 feet. Mostly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 50.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SE Agness OR
 42.4°N 123.83°W (Elev. 2582 ft)
3:41 pm PST Jan 4, 2026
6pm PST Jan 4, 2026-6pm PST Jan 11, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database