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

50°F

10°C

Humidity 85%
Wind Speed SSE 1 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 21 Mar 12:52 AM PDT
Extended Forecast for

9 Miles ENE Happy Camp CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 45. West wind 3 to 5 mph.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 72. Calm wind becoming northwest 5 to 8 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Widespread frost after 2am. Otherwise, mostly clear, with a low around 33. Northeast wind 5 to 10 mph.

    Low: 33 °F

    Mostly Clear
    then Frost

  • Sunday

    Sunday: Widespread frost before 8am. Otherwise, mostly sunny, with a high near 73. East northeast wind 6 to 8 mph.

    High: 73 °F

    Frost then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. North northwest wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain. Mostly sunny, with a high near 72.

    High: 72 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A chance of rain. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 45. West wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 72. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Saturday Night
Widespread frost after 2am. Otherwise, mostly clear, with a low around 33. Northeast wind 5 to 10 mph.
Sunday
Widespread frost before 8am. Otherwise, mostly sunny, with a high near 73. East northeast wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around 39. North northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 75.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 44.
Tuesday
A chance of rain. Mostly sunny, with a high near 72.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 42.
Wednesday
A chance of rain, mainly before 11am. Mostly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
Sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 36.
Friday
Sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ENE Happy Camp CA
 41.84°N 123.19°W (Elev. 1421 ft)
Last Update:
1:41 am PDT Mar 21, 2026
Forecast Valid:
1am PDT Mar 21, 2026-6pm PDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation