National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

51°F

11°C

Humidity 83%
Wind Speed S 2 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 21 Apr 05:52 PM PDT
Extended Forecast for

Happy Camp CA

  • Tonight

    Tonight: Rain and thunderstorms likely before 4am, then rain likely after 5am. Mostly cloudy, with a low around 40. South southwest wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 40 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely, mainly between 2pm and 3pm. Partly sunny, with a high near 59. Southwest wind 3 to 7 mph. Chance of precipitation is 60%.

    High: 59 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36. Southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 36 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 70. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 38. North northwest wind around 6 mph becoming light and variable in the evening.

    Low: 38 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Saturday

    Saturday: A slight chance of rain after 11am. Sunny, with a high near 72.

    High: 72 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A slight chance of rain before 11pm. Partly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    Rain then
    Mostly Clear

Detailed Forecast

Tonight
Rain and thunderstorms likely before 4am, then rain likely after 5am. Mostly cloudy, with a low around 40. South southwest wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Rain likely, mainly between 2pm and 3pm. Partly sunny, with a high near 59. Southwest wind 3 to 7 mph. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around 36. Southwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 70. Calm wind becoming north northwest around 5 mph in the afternoon.
Thursday Night
Clear, with a low around 38. North northwest wind around 6 mph becoming light and variable in the evening.
Friday
Sunny, with a high near 76.
Friday Night
Clear, with a low around 41.
Saturday
A slight chance of rain after 11am. Sunny, with a high near 72.
Saturday Night
A slight chance of rain before 11pm. Partly cloudy, with a low around 40.
Sunday
A chance of rain, mainly after 11am. Mostly sunny, with a high near 66.
Sunday Night
A slight chance of rain. Partly cloudy, with a low around 40.
Monday
A chance of rain. Partly sunny, with a high near 67.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 41.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Happy Camp CA
 41.81°N 123.36°W (Elev. 1299 ft)
Last Update:
4:41 pm PDT Apr 21, 2026
Forecast Valid:
6pm PDT Apr 21, 2026-6pm PDT Apr 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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