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

Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

37°F

3°C

Humidity 100%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 17 Mar 03:52 AM PDT
Extended Forecast for

12 Miles W Happy Camp CA

  • Today

    Today: Sunny, with a high near 65. Northwest wind around 6 mph becoming calm.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 49. West wind 5 to 8 mph.

    Low: 49 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 48. Southwest wind 8 to 10 mph becoming west northwest in the evening.

    Low: 48 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 66. East southeast wind 7 to 11 mph becoming west southwest in the afternoon.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of rain before 11am. Snow level 8000 feet lowering to 7300 feet. Partly sunny, with a high near 54.

    High: 54 °F

    Slight Chance
    Rain then
    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 65. Northwest wind around 6 mph becoming calm.
Tonight
Mostly clear, with a low around 49. West wind 5 to 8 mph.
Wednesday
Sunny, with a high near 65. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Wednesday Night
Clear, with a low around 48. Southwest wind 8 to 10 mph becoming west northwest in the evening.
Thursday
Sunny, with a high near 66. East southeast wind 7 to 11 mph becoming west southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 50.
Friday
Mostly sunny, with a high near 63.
Friday Night
Mostly cloudy, with a low around 45.
Saturday
A slight chance of rain before 11am. Snow level 8000 feet lowering to 7300 feet. Partly sunny, with a high near 54.
Saturday Night
Mostly cloudy, with a low around 38.
Sunday
Partly sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 38.
Monday
A slight chance of rain and snow. Snow level 5200 feet rising to 6000 feet in the afternoon. Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Happy Camp CA
 41.79°N 123.59°W (Elev. 5000 ft)
Last Update:
3:21 am PDT Mar 17, 2026
Forecast Valid:
4am PDT Mar 17, 2026-6pm PDT Mar 23, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation