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

Fire Weather Concerns for the Plains; Thunderstorms in the Southeast; Record Warmth Spreads in the Southwest

Elevated to locally critical conditions will persist across the High Plains. Showers and scattered thunderstorms are expected over parts of the Southeast and Florida Peninsula. Clipper system will bring modest snowfall and strong winds from the Northern High Plains into the Upper Midwest this weekend. Record warmth will persist across the Southwest into the southern Plains. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

53°F

12°C

Humidity 81%
Wind Speed NW 0 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 26 Feb 05:52 PM PST
Extended Forecast for

Illinois Valley OR

  • Tonight

    Tonight: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 37. South southwest wind around 5 mph becoming calm in the evening.

    Low: 37 °F

    Patchy Fog

  • Friday

    Friday: Patchy dense fog before 10am. Otherwise, partly sunny, with a high near 62. Light and variable wind.

    High: 62 °F

    Patchy Dense
    Fog then
    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of rain after 4am. Patchy fog. Otherwise, mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Fog
    then Chance
    Rain and
    Patchy Fog

  • Saturday

    Saturday: Rain, mainly after 10am. High near 57. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 4am. Patchy fog. Low around 42. Calm wind. Chance of precipitation is 80%.

    Low: 42 °F

    Rain and
    Patchy Fog

  • Sunday

    Sunday: Rain likely, mainly after 10am. Areas of fog before 1pm. Otherwise, mostly cloudy, with a high near 58. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Rain Likely
    and Areas Fog

  • Sunday Night

    Sunday Night: Rain likely, mainly before 10pm. Patchy fog after 7pm. Otherwise, mostly cloudy, with a low around 40. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain Likely
    and Patchy
    Fog

  • Monday

    Monday: A chance of rain, mainly before 10am. Areas of fog before 11am. Otherwise, partly sunny, with a high near 60.

    High: 60 °F

    Chance Rain
    and Areas Fog

  • Monday Night

    Monday Night: A slight chance of rain before 10pm. Patchy fog. Otherwise, partly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Areas
    Fog

Detailed Forecast

Tonight
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 37. South southwest wind around 5 mph becoming calm in the evening.
Friday
Patchy dense fog before 10am. Otherwise, partly sunny, with a high near 62. Light and variable wind.
Friday Night
A 30 percent chance of rain after 4am. Patchy fog. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Saturday
Rain, mainly after 10am. High near 57. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Rain, mainly before 4am. Patchy fog. Low around 42. Calm wind. Chance of precipitation is 80%.
Sunday
Rain likely, mainly after 10am. Areas of fog before 1pm. Otherwise, mostly cloudy, with a high near 58. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Rain likely, mainly before 10pm. Patchy fog after 7pm. Otherwise, mostly cloudy, with a low around 40. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
A chance of rain, mainly before 10am. Areas of fog before 11am. Otherwise, partly sunny, with a high near 60.
Monday Night
A slight chance of rain before 10pm. Patchy fog. Otherwise, partly cloudy, with a low around 38.
Tuesday
A chance of rain, mainly after 4pm. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 60.
Tuesday Night
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 37.
Wednesday
Rain likely. Patchy fog. Snow level 4400 feet. Otherwise, mostly cloudy, with a high near 53.
Wednesday Night
A chance of rain. Patchy fog. Snow level 3800 feet. Otherwise, mostly cloudy, with a low around 33.
Thursday
A slight chance of rain. Areas of fog. Snow level 3300 feet rising to 4500 feet in the afternoon. Otherwise, mostly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Illinois Valley OR
 42.09°N 123.68°W (Elev. 1394 ft)
Last Update:
3:41 pm PST Feb 26, 2026
Forecast Valid:
6pm PST Feb 26, 2026-6pm PST Mar 5, 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