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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

53°F

12°C

Humidity 38%
Wind Speed N 12 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 16 Apr 12:52 PM PDT
Extended Forecast for

9 Miles ENE 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 56. North northeast wind around 8 mph.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Areas of frost after 2am. Otherwise, clear, with a low around 36. Northeast wind around 6 mph.

    Low: 36 °F

    Clear then
    Areas Frost

  • Friday

    Friday: Areas of frost before 8am. Otherwise, sunny, with a high near 70. East wind 6 to 8 mph.

    High: 70 °F

    Areas Frost
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 39. Light and variable wind.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 74. Calm wind becoming west around 5 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 40 percent chance of rain. Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Rain Likely

  • Monday

    Monday: Rain likely. Mostly cloudy, with a high near 65.

    High: 65 °F

    Rain Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 56. North northeast wind around 8 mph.
Tonight
Areas of frost after 2am. Otherwise, clear, with a low around 36. Northeast wind around 6 mph.
Friday
Areas of frost before 8am. Otherwise, sunny, with a high near 70. East wind 6 to 8 mph.
Friday Night
Mostly clear, with a low around 39. Light and variable wind.
Saturday
Mostly sunny, with a high near 74. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 47.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 69.
Sunday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 43.
Monday
Rain likely. Mostly cloudy, with a high near 65.
Monday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 42.
Tuesday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 64.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 42.
Wednesday
A chance of rain. Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ENE Happy Camp CA
 41.84°N 123.19°W (Elev. 1421 ft)
Last Update:
11:52 am PDT Apr 16, 2026
Forecast Valid:
1pm PDT Apr 16, 2026-6pm PDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation