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

38°F

3°C

Humidity 100%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 17 Mar 02:52 AM PDT
Extended Forecast for

9 Miles ENE Happy Camp CA

  • Overnight

    Overnight: Clear, with a low around 48. Calm wind.

    Low: 48 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81. Calm wind becoming west around 6 mph in the afternoon.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 49. West northwest wind around 5 mph becoming calm in the evening.

    Low: 49 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 48. West wind 5 to 7 mph becoming calm in the evening.

    Low: 48 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82.

    High: 82 °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 79.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 48. Calm wind.
Tuesday
Sunny, with a high near 81. Calm wind becoming west around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 49. West northwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 82. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Wednesday Night
Clear, with a low around 48. West wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 50.
Friday
Mostly sunny, with a high near 79.
Friday Night
Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 68.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 40.
Monday
A slight chance of rain. Partly sunny, with a high near 68.
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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:
3:21 am PDT Mar 17, 2026
Forecast Valid:
3am PDT Mar 17, 2026-6pm PDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation