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

15 Miles ESE Cave Junction OR

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. West northwest wind 5 to 7 mph becoming southwest after midnight.

    Low: 48 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy through mid morning, then gradual clearing, with a high near 52. Light northwest wind becoming north northwest 5 to 9 mph in the afternoon.

    High: 52 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. North wind 7 to 9 mph becoming east northeast after midnight.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 56. East wind 5 to 8 mph becoming light and variable  in the morning.

    High: 56 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 38. Light and variable wind becoming north 5 to 7 mph in the evening.

    Low: 38 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain.  Snow level 8100 feet lowering to 6900 feet after midnight . Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 48. West northwest wind 5 to 7 mph becoming southwest after midnight.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 52. Light northwest wind becoming north northwest 5 to 9 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 35. North wind 7 to 9 mph becoming east northeast after midnight.
Sunday
Mostly sunny, with a high near 56. East wind 5 to 8 mph becoming light and variable in the morning.
Sunday Night
Mostly cloudy, with a low around 38. Light and variable wind becoming north 5 to 7 mph in the evening.
Monday
Partly sunny, with a high near 56.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 54.
Tuesday Night
A chance of rain. Snow level 8100 feet lowering to 6900 feet after midnight . Mostly cloudy, with a low around 40.
Wednesday
A chance of rain before 11am. Snow level 6500 feet lowering to 5500 feet in the afternoon . Partly sunny, with a high near 46.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Sunny, with a high near 50.
Thursday Night
Mostly clear, with a low around 33.
Friday
Sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles ESE Cave Junction OR
 42.07°N 123.38°W (Elev. 4656 ft)
4:41 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