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

48°F

9°C

Humidity 46%
Wind Speed NNE 11 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Wind Chill43°F (6°C)
Last update 16 Apr 10:52 AM 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

  • Today

    Today: Sunny, with a high near 57. North northeast wind 8 to 10 mph.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Widespread frost after 2am. Otherwise, mostly clear, with a low around 30. Northeast wind 5 to 8 mph becoming calm in the evening.

    Low: 30 °F

    Clear then
    Frost

  • Friday

    Friday: Widespread frost, mainly before 8am. 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 40. North wind around 5 mph becoming calm in the evening.

    Low: 40 °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 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 65.

    High: 65 °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 61.

    High: 61 °F

    Rain Likely

Detailed Forecast

Today
Sunny, with a high near 57. North northeast wind 8 to 10 mph.
Tonight
Widespread frost after 2am. Otherwise, mostly clear, with a low around 30. Northeast wind 5 to 8 mph becoming calm in the evening.
Friday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 69. Light east northeast wind.
Friday Night
Partly cloudy, with a low around 40. North 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 after 11pm. Mostly cloudy, with a low around 46.
Sunday
A 50 percent chance of rain. Mostly cloudy, with a high near 65.
Sunday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 43.
Monday
Rain likely. Mostly cloudy, with a high near 61.
Monday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 41.
Tuesday
Rain likely and possibly a thunderstorm. Partly sunny, 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 62.
Basemap Options
Click map to change the forecast location
Loading map...
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:
10:47 am PDT Apr 16, 2026
Forecast Valid:
11am PDT Apr 16, 2026-6pm PDT Apr 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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