Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

52°F

11°C

Humidity 69%
Wind Speed NNE 2 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 13 Apr 10:52 AM PDT
Extended Forecast for

Happy Camp CA

  • Today

    Today: A 20 percent chance of showers.  Mostly sunny, with a high near 59. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 59 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. West northwest wind around 5 mph becoming calm  in the evening.

    Low: 38 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 64. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 64 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 11pm.  Mostly cloudy, with a low around 40. South southwest wind 5 to 9 mph.  Chance of precipitation is 60%.

    Low: 40 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain.  Snow level 4500 feet. High near 53. South southwest wind 6 to 11 mph, with gusts as high as 30 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 53 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain showers likely before 2am, then a slight chance of rain and snow showers.  Snow level 3900 feet lowering to 2000 feet after midnight . Mostly cloudy, with a low around 30. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 30 °F

    Showers
    Likely then
    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers. Mostly sunny, with a high near 59. Calm wind becoming west northwest around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 38. West northwest wind around 5 mph becoming calm in the evening.
Tuesday
Increasing clouds, with a high near 64. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Tuesday Night
Rain likely, mainly after 11pm. Mostly cloudy, with a low around 40. South southwest wind 5 to 9 mph. Chance of precipitation is 60%.
Wednesday
Rain. Snow level 4500 feet. High near 53. South southwest wind 6 to 11 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain showers likely before 2am, then a slight chance of rain and snow showers. Snow level 3900 feet lowering to 2000 feet after midnight . Mostly cloudy, with a low around 30. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday
Sunny, with a high near 57.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 70.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 42.
Sunday
Rain likely. Mostly cloudy, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Happy Camp CA
 41.81°N 123.36°W (Elev. 1299 ft)
11:26 am PDT Apr 13, 2026
11am PDT Apr 13, 2026-6pm PDT Apr 19, 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