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

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

32°F

0°C

Humidity 100%
Wind Speed W 1 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 16 Apr 03:52 AM PDT
Extended Forecast for

16 Miles SE Agness OR

Frost Advisory April 16, 04:07am until April 16, 09:00am
Freeze Warning April 17, 03:00am until April 17, 09:00am
Click here for hazard details and duration
...
Freeze Warning
  •  
    Frost Advisory April 16, 04:07am until April 16, 09:00am

    NOW until 9:00am Thu

    Frost Advisory

  • Today

    High: 48 °F

    Slight Chance
    Snow then
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 34. Northeast wind 7 to 9 mph.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 60. East wind around 8 mph.

    High: 60 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. North northwest wind around 6 mph becoming light and variable in the evening.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 62. Southeast wind 5 to 9 mph becoming southwest in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance Rain

  • Sunday

    Sunday: Rain likely. Mostly cloudy, with a high near 53. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 53 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain. Snow level 5500 feet. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Rain

Detailed Forecast

Today
A slight chance of snow between 9am and 10am. Snow level rising to 3500 feet in the afternoon. Mostly sunny, with a high near 48. North northeast wind 5 to 11 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 34. Northeast wind 7 to 9 mph.
Friday
Mostly sunny, with a high near 60. East wind around 8 mph.
Friday Night
Partly cloudy, with a low around 43. North northwest wind around 6 mph becoming light and variable in the evening.
Saturday
Mostly sunny, with a high near 62. Southeast wind 5 to 9 mph becoming southwest in the afternoon.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 49.
Sunday
Rain likely. Mostly cloudy, with a high near 53. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain. Snow level 5500 feet. Mostly cloudy, with a low around 46.
Monday
Rain likely. Snow level 5100 feet. Mostly cloudy, with a high near 52.
Monday Night
Rain likely, mainly before 11pm. Snow level 5300 feet. Mostly cloudy, with a low around 45.
Tuesday
Rain likely. Snow level 5000 feet rising to 5600 feet in the afternoon. Mostly cloudy, with a high near 51.
Tuesday Night
Rain likely. Snow level 5700 feet lowering to 5100 feet after midnight . Mostly cloudy, with a low around 44.
Wednesday
A chance of rain. Snow level 5100 feet. Partly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SE Agness OR
 42.4°N 123.83°W (Elev. 2582 ft)
Last Update:
3:57 am PDT Apr 16, 2026
Forecast Valid:
4am PDT Apr 16, 2026-6pm PDT Apr 22, 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