Sinlaku Continues to Impact the Marianas; Severe Weather for the Central Plains and Northeast; Record Warmth for mid-Atlantic to Southeast

Sinlaku continues to affect the Marianas as it moves north through Friday. Meanwhile, severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley today and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

33°F

1°C

Humidity 100%
Wind Speed SW 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 16 Apr 04:52 AM PDT
Extended Forecast for

Happy Camp CA

Frost Advisory April 16, 05:55am until April 16, 09:00am
Freeze Warning April 17, 03:00am until April 17, 09:00am
Click here for hazard details and duration
...
Freeze Warning
  •  
    Frost Advisory April 16, 05:55am until April 16, 09:00am

    NOW until 9:00am Thu

    Frost Advisory

  • Today

    High: 57 °F

    Frost then
    Sunny

  • Tonight

    Tonight: Widespread frost, mainly after 2am.  Otherwise, mostly clear, with a low around 30. North wind 5 to 8 mph.

    Low: 30 °F

    Frost

  • Friday

    Friday: Widespread frost, mainly before 8am.  Otherwise, sunny, with a high near 69. North northeast wind around 5 mph becoming calm  in the morning.

    High: 69 °F

    Frost then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74. Light and variable wind becoming southwest around 6 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly after 11pm.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain

  • Sunday

    Sunday: Rain likely, mainly after 11am.  Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 64 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain likely.  Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain Likely

Detailed Forecast

Today
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 57. Light east wind becoming northeast 5 to 10 mph in the morning.
Tonight
Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 30. North wind 5 to 8 mph.
Friday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 69. North northeast wind around 5 mph becoming calm in the morning.
Friday Night
Partly cloudy, with a low around 39. North northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 74. Light and variable wind becoming southwest around 6 mph in the afternoon.
Saturday Night
A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 46.
Sunday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 64. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain likely. Mostly cloudy, with a low around 42.
Monday
Rain likely. Mostly cloudy, with a high near 62.
Monday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 41.
Tuesday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 60.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 40.
Wednesday
A chance of rain. Partly sunny, with a high near 61.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Happy Camp CA
 41.81°N 123.36°W (Elev. 1299 ft)
4:40 am PDT Apr 16, 2026
5am PDT Apr 16, 2026-6pm PDT Apr 22, 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