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

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 >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

29°F

-2°C

Humidity 100%
Wind Speed WSW 0 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Last update 16 Apr 05:52 AM PDT
Extended Forecast for

16 Miles NE Happy Camp CA

Frost Advisory April 16, 06:23am 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, 06:23am until April 16, 09:00am

    NOW until 9:00am Thu

    Frost Advisory

  • Today

    High: 44 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. North northeast wind 6 to 13 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58. Southeast wind around 7 mph becoming north northeast in the afternoon.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40. North wind 5 to 9 mph becoming south southeast after midnight.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64. South southeast wind 8 to 10 mph becoming southwest in the afternoon.

    High: 64 °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: A 50 percent chance of rain. Mostly cloudy, with a high near 55.

    High: 55 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely. Snow level 6200 feet lowering to 5600 feet. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Rain Likely

Detailed Forecast

Today
Mostly sunny, with a high near 44. North wind 9 to 16 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 30. North northeast wind 6 to 13 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 58. Southeast wind around 7 mph becoming north northeast in the afternoon.
Friday Night
Partly cloudy, with a low around 40. North wind 5 to 9 mph becoming south southeast after midnight.
Saturday
Mostly sunny, with a high near 64. South southeast wind 8 to 10 mph becoming southwest in the afternoon.
Saturday Night
A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 46.
Sunday
A 50 percent chance of rain. Mostly cloudy, with a high near 55.
Sunday Night
Rain likely. Snow level 6200 feet lowering to 5600 feet. Mostly cloudy, with a low around 43.
Monday
Rain likely. Snow level 5000 feet rising to 5500 feet in the afternoon. Mostly cloudy, with a high near 50.
Monday Night
Rain likely, mainly before 11pm. Snow level 5500 feet. Mostly cloudy, with a low around 41.
Tuesday
Rain likely and possibly a thunderstorm. Snow level 5100 feet rising to 5800 feet in the afternoon. Mostly cloudy, with a high near 49.
Tuesday Night
Rain likely. Snow level 6100 feet lowering to 5300 feet after midnight . Mostly cloudy, with a low around 40.
Wednesday
A chance of rain. Snow level 5100 feet rising to 5800 feet in the afternoon. Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles NE Happy Camp CA
 41.97°N 123.17°W (Elev. 2999 ft)
Last Update:
4:40 am PDT Apr 16, 2026
Forecast Valid:
6am PDT Apr 16, 2026-6pm PDT Apr 22, 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