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

52°F

11°C

Humidity 53%
Wind Speed NNE 8 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 21 Mar 10:52 PM PDT
Extended Forecast for

8 Miles N Cave Junction OR

  • Tonight

    Tonight: Widespread frost after 2am.  Otherwise, partly cloudy, with a low around 36. North northeast wind around 6 mph.

    Low: 36 °F

    Frost

  • Sunday

    Sunday: Widespread frost before 8am.  Otherwise, mostly sunny, with a high near 66. North northeast wind 6 to 9 mph.

    High: 66 °F

    Frost then
    Partly Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 5am.  Otherwise, mostly cloudy, with a low around 38. Northeast wind around 6 mph becoming calm  in the evening.

    Low: 38 °F

    Mostly Cloudy
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 8am.  Otherwise, partly sunny, with a high near 68. Light and variable wind.

    High: 68 °F

    Areas Frost
    then Partly
    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain after 11pm.  Mostly cloudy, with a low around 47. South wind 3 to 5 mph.

    Low: 47 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain likely, mainly after 11am.  Mostly cloudy, with a high near 63. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely.  Mostly cloudy, with a low around 44. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely, mainly before 11am.  Partly sunny, with a high near 62.

    High: 62 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 11pm.  Snow level 5100 feet lowering to 3200 feet after midnight . Mostly cloudy, with a low around 35.

    Low: 35 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Tonight
Widespread frost after 2am. Otherwise, partly cloudy, with a low around 36. North northeast wind around 6 mph.
Sunday
Widespread frost before 8am. Otherwise, mostly sunny, with a high near 66. North northeast wind 6 to 9 mph.
Sunday Night
Areas of frost after 5am. Otherwise, mostly cloudy, with a low around 38. Northeast wind around 6 mph becoming calm in the evening.
Monday
Areas of frost before 8am. Otherwise, partly sunny, with a high near 68. Light and variable wind.
Monday Night
A 30 percent chance of rain after 11pm. Mostly cloudy, with a low around 47. South wind 3 to 5 mph.
Tuesday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 63. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 44. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely, mainly before 11am. Partly sunny, with a high near 62.
Wednesday Night
A slight chance of rain before 11pm. Snow level 5100 feet lowering to 3200 feet after midnight . Mostly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 35.
Friday
Mostly sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 71.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles N Cave Junction OR
 42.28°N 123.64°W (Elev. 1398 ft)
10:41 pm PDT Mar 21, 2026
11pm PDT Mar 21, 2026-6pm PDT Mar 28, 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