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

84°F

29°C

Humidity 24%
Wind Speed ESE 1 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Heat Index82°F (28°C)
Last update 20 Mar 03:52 PM PDT
Extended Forecast for

16 Miles SE Agness OR

  • Tonight

    Tonight: Mostly cloudy, with a low around 51. West northwest wind 3 to 7 mph.

    Low: 51 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy through mid morning, then gradual clearing, with a high near 55. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 55 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39. North wind 6 to 8 mph becoming east in the evening.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 59. Northeast wind 7 to 10 mph.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 41. Northeast wind 6 to 8 mph.

    Low: 41 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain, mainly after 11am.  Partly sunny, with a high near 55.

    High: 55 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A chance of rain.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 51. West northwest wind 3 to 7 mph.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 55. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 39. North wind 6 to 8 mph becoming east in the evening.
Sunday
Mostly sunny, with a high near 59. Northeast wind 7 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 41. Northeast wind 6 to 8 mph.
Monday
Partly sunny, with a high near 60.
Monday Night
Mostly cloudy, with a low around 48.
Tuesday
A chance of rain, mainly after 11am. Partly sunny, with a high near 55.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 46.
Wednesday
A chance of rain, mainly before 11am. Snow level 5700 feet lowering to 4500 feet in the afternoon . Partly sunny, with a high near 46.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly clear, with a low around 39.
Friday
Sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SE Agness OR
 42.4°N 123.83°W (Elev. 2582 ft)
3:21 pm PDT Mar 20, 2026
4pm PDT Mar 20, 2026-6pm PDT Mar 27, 2026
 
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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