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

Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

33°F

1°C

Humidity 100%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 17 Mar 07:52 AM PDT
Extended Forecast for

16 Miles SE Agness OR

  • Today

    Today: Sunny, with a high near 71. Calm wind becoming west around 5 mph.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 50. Light west northwest wind.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71. Calm wind becoming west around 5 mph in the afternoon.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. West wind around 6 mph becoming south after midnight.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 72. South southeast wind 6 to 8 mph becoming southwest in the afternoon.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of rain after 11am. Mostly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A chance of rain after 11pm. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain, mainly before 11am. Partly sunny, with a high near 58.

    High: 58 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 71. Calm wind becoming west around 5 mph.
Tonight
Mostly clear, with a low around 50. Light west northwest wind.
Wednesday
Sunny, with a high near 71. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 52. West wind around 6 mph becoming south after midnight.
Thursday
Sunny, with a high near 72. South southeast wind 6 to 8 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 53.
Friday
A 20 percent chance of rain after 11am. Mostly sunny, with a high near 69.
Friday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 48.
Saturday
A chance of rain, mainly before 11am. Partly sunny, with a high near 58.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
A slight chance of rain. Snow level 5800 feet lowering to 4800 feet after midnight . Mostly cloudy, with a low around 41.
Monday
A chance of rain and snow. Snow level 4300 feet rising to 5200 feet in the afternoon. Partly sunny, with a high near 57.
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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:
6:56 am PDT Mar 17, 2026
Forecast Valid:
8am PDT Mar 17, 2026-6pm PDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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