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

55°F

13°C

Humidity 35%
Wind Speed N 12 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 16 Apr 01:52 PM PDT
Extended Forecast for

11 Miles NNE Happy Camp CA

Freeze Warning April 17, 12:00am until April 17, 11:00am
Click here for hazard details and duration
Freeze Warning

  • This Afternoon

    This Afternoon: Sunny, with a high near 39. North northeast wind around 11 mph.

    High: 39 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 26. Northeast wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 49. East wind 3 to 6 mph.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. North northeast wind around 6 mph becoming calm after midnight.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58. South wind 3 to 7 mph.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Snow level 7600 feet lowering to 6800 feet after midnight . Mostly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 40 percent chance of rain. Snow level 6100 feet rising to 7000 feet in the afternoon. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely. Snow level 7200 feet lowering to 6400 feet after midnight . Mostly cloudy, with a low around 40.

    Low: 40 °F

    Rain Likely

  • Monday

    Monday: Rain likely. Snow level 6100 feet. Mostly cloudy, with a high near 48.

    High: 48 °F

    Rain Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 39. North northeast wind around 11 mph.
Tonight
Mostly clear, with a low around 26. Northeast wind 6 to 13 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 49. East wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 39. North northeast wind around 6 mph becoming calm after midnight.
Saturday
Mostly sunny, with a high near 58. South wind 3 to 7 mph.
Saturday Night
A 20 percent chance of rain. Snow level 7600 feet lowering to 6800 feet after midnight . Mostly cloudy, with a low around 44.
Sunday
A 40 percent chance of rain. Snow level 6100 feet rising to 7000 feet in the afternoon. Mostly cloudy, with a high near 53.
Sunday Night
Rain likely. Snow level 7200 feet lowering to 6400 feet after midnight . Mostly cloudy, with a low around 40.
Monday
Rain likely. Snow level 6100 feet. Mostly cloudy, with a high near 48.
Monday Night
Rain before 2am, then a chance of rain and snow. Snow level 6200 feet lowering to 5600 feet after midnight . Mostly cloudy, with a low around 38.
Tuesday
Rain and snow showers likely. Some thunder is also possible. Snow level 5600 feet. Mostly cloudy, with a high near 48.
Tuesday Night
Rain likely. Snow level 6000 feet lowering to 5400 feet after midnight . Mostly cloudy, with a low around 39.
Wednesday
A chance of rain and snow. Snow level 5200 feet rising to 5800 feet in the afternoon. Partly sunny, with a high near 47.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NNE Happy Camp CA
 41.94°N 123.25°W (Elev. 4360 ft)
Last Update:
11:52 am PDT Apr 16, 2026
Forecast Valid:
2pm 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