Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

50°F

10°C

Humidity 95%
Wind Speed S 5 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Wind Chill48°F (9°C)
Last update 15 Apr 10:52 AM PDT
Extended Forecast for

Happy Camp CA

Freeze Watch April 17, 03:00am until April 17, 09:00am
Frost Advisory April 16, 03:00am until April 16, 09:00am
Click here for hazard details and duration
Freeze Watch
Frost Advisory
  • Today

    Today: Rain, mainly before 2pm.  Snow level 5900 feet lowering to 4000 feet. High near 53. West southwest wind 8 to 10 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Rain

  • Tonight

    Tonight: Widespread frost, mainly after 2am.  Otherwise, mostly clear, with a low around 32. West northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 32 °F

    Frost

  • Thursday

    Thursday: Widespread frost, mainly before 8am.  Otherwise, sunny, with a high near 58. Calm wind becoming northeast 5 to 9 mph in the afternoon.

    High: 58 °F

    Frost then
    Sunny

  • Thursday Night

    Thursday Night: Widespread frost, mainly after 2am.  Otherwise, clear, with a low around 31. North northeast wind 3 to 8 mph.

    Low: 31 °F

    Frost

  • Friday

    Friday: Widespread frost before 11am.  Otherwise, sunny, with a high near 69. Light east northeast wind.

    High: 69 °F

    Frost then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of rain after 11pm.  Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain

  • Sunday

    Sunday: A chance of rain.  Mostly cloudy, with a high near 64.

    High: 64 °F

    Chance Rain

Detailed Forecast

Today
Rain, mainly before 2pm. Snow level 5900 feet lowering to 4000 feet. High near 53. West southwest wind 8 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 32. West northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58. Calm wind becoming northeast 5 to 9 mph in the afternoon.
Thursday Night
Widespread frost, mainly after 2am. Otherwise, clear, with a low around 31. North northeast wind 3 to 8 mph.
Friday
Widespread frost before 11am. Otherwise, sunny, with a high near 69. Light east northeast wind.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 44.
Sunday
A chance of rain. Mostly cloudy, with a high near 64.
Sunday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 42.
Monday
Rain likely. Mostly cloudy, with a high near 64.
Monday Night
A chance of rain. Mostly cloudy, with a low around 42.
Tuesday
A chance of rain. Partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Happy Camp CA
 41.81°N 123.36°W (Elev. 1299 ft)
11:27 am PDT Apr 15, 2026
11am PDT Apr 15, 2026-6pm PDT Apr 21, 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