Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

84°F

29°C

Humidity 16%
Wind Speed WSW 5 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Heat Index81°F (27°C)
Last update 19 Mar 03:52 PM PDT
Extended Forecast for

18 Miles WNW Cave Junction OR

  • Tonight

    Tonight: Mostly clear, with a low around 59. Southwest wind 5 to 7 mph becoming southeast after midnight.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny during the morning, then sunny during the afternoon, with a high near 67. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 67 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 46. West wind 5 to 7 mph becoming light and variable.

    Low: 46 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of rain before 11am.  Snow level 7000 feet lowering to 5100 feet. Mostly cloudy, then gradually becoming sunny, with a high near 55. Northwest wind 5 to 9 mph becoming east northeast in the morning.

    High: 55 °F

    Slight Chance
    Rain then
    Sunny

  • 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: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Monday Night

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

    Low: 52 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 59. Southwest wind 5 to 7 mph becoming southeast after midnight.
Friday
Partly sunny during the morning, then sunny during the afternoon, with a high near 67. Calm wind becoming west 5 to 7 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 46. West wind 5 to 7 mph becoming light and variable.
Saturday
A 20 percent chance of rain before 11am. Snow level 7000 feet lowering to 5100 feet. Mostly cloudy, then gradually becoming sunny, with a high near 55. Northwest wind 5 to 9 mph becoming east northeast in the morning.
Saturday Night
Mostly clear, with a low around 38. Northeast wind 10 to 14 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 57.
Monday Night
A slight chance of rain after 11pm. Mostly cloudy, with a low around 52.
Tuesday
A chance of rain. Partly sunny, with a high near 59.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 45.
Wednesday
Rain likely. Snow level 4700 feet lowering to 3900 feet in the afternoon . Partly sunny, with a high near 49.
Wednesday Night
A slight chance of rain. Snow level 3900 feet lowering to 2800 feet after midnight . Partly cloudy, with a low around 38.
Thursday
Sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
18 Miles WNW Cave Junction OR
 42.22°N 123.99°W (Elev. 2487 ft)
3:21 pm PDT Mar 19, 2026
4pm PDT Mar 19, 2026-6pm PDT Mar 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database