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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

54°F

12°C

Humidity 61%
Wind Speed E 1 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 20 Mar 09:52 AM PDT
Extended Forecast for

17 Miles SSE Agness OR

  • Today

    Today: Partly sunny, with a high near 68. Calm wind becoming northwest 5 to 8 mph in the afternoon.

    High: 68 °F

    Partly Sunny

  • Tonight

    Tonight: A 30 percent chance of rain, mainly between 11pm and 3am. Mostly cloudy, with a low around 52. North wind around 7 mph.

    Low: 52 °F

    Chance Rain

  • Saturday

    Saturday: A 40 percent chance of rain, mainly before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 57. North wind around 9 mph.

    High: 57 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. Northeast wind 10 to 14 mph, with gusts as high as 21 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 62. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 62 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of rain after 11pm. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance Rain

  • Tuesday

    Tuesday: A chance of rain. Partly sunny, with a high near 58.

    High: 58 °F

    Chance Rain

Detailed Forecast

Today
Partly sunny, with a high near 68. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Tonight
A 30 percent chance of rain, mainly between 11pm and 3am. Mostly cloudy, with a low around 52. North wind around 7 mph.
Saturday
A 40 percent chance of rain, mainly before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 57. North wind around 9 mph.
Saturday Night
Mostly clear, with a low around 38. Northeast wind 10 to 14 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 62. East northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Partly sunny, with a high near 62.
Monday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 52.
Tuesday
A chance of rain. Partly sunny, with a high near 58.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 48.
Wednesday
Rain likely, possibly mixed with snow. Snow level 6200 feet lowering to 5100 feet in the afternoon . Partly sunny, with a high near 52.
Wednesday Night
A slight chance of rain. Snow level 5000 feet lowering to 3400 feet after midnight . Partly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSE Agness OR
 42.32°N 123.96°W (Elev. 2408 ft)
Last Update:
10:41 am PDT Mar 20, 2026
Forecast Valid:
10am PDT Mar 20, 2026-6pm PDT Mar 26, 2026
 
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Additional Resources

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Chance of Precipitation