Severe Weather for Northeast Southeastward into the Southern Plains; Flooding in the Upper Great Lakes

Severe thunderstorms are expected from the Northeast to Texas through the night 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 and the mid-Atlantic. There is late-season snow over the Northern/Central Rockies and the Northern Plains. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

57°F

14°C

Humidity 31%
Wind Speed N 9 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 16 Apr 05:52 PM PDT
Extended Forecast for

12 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
  • Tonight

    Tonight: Mostly clear, with a low around 27. Northeast wind 5 to 14 mph, with gusts as high as 21 mph.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 45. East wind 3 to 6 mph.

    High: 45 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. North northeast wind 5 to 7 mph becoming light and variable  after midnight.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 54. South southwest wind 5 to 8 mph.

    High: 54 °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. West southwest wind 7 to 9 mph becoming south after midnight.

    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 50.

    High: 50 °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. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain Likely

  • Monday

    Monday: Rain likely.  Snow level 6100 feet. Mostly cloudy, with a high near 46.

    High: 46 °F

    Rain Likely

  • Monday Night

    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.

    Low: 38 °F

    Rain then
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 27. Northeast wind 5 to 14 mph, with gusts as high as 21 mph.
Friday
Mostly sunny, with a high near 45. East wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 39. North northeast wind 5 to 7 mph becoming light and variable after midnight.
Saturday
Mostly sunny, with a high near 54. South southwest wind 5 to 8 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. West southwest wind 7 to 9 mph becoming south after midnight.
Sunday
A 40 percent chance of rain. Snow level 6100 feet rising to 7000 feet in the afternoon. Mostly cloudy, with a high near 50.
Sunday Night
Rain likely. Snow level 7200 feet lowering to 6400 feet after midnight . Mostly cloudy, with a low around 40. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain likely. Snow level 6100 feet. Mostly cloudy, with a high near 46.
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
A chance of rain and snow showers before 11am, then rain showers likely. Some thunder is also possible. Snow level 5600 feet. Mostly cloudy, with a high near 45.
Tuesday Night
Rain and snow likely. Snow level 6000 feet lowering to 5400 feet after midnight . Mostly cloudy, with a low around 39.
Wednesday
Rain and snow likely. Snow level 5200 feet rising to 5700 feet in the afternoon. Mostly cloudy, with a high near 44.
Wednesday Night
A chance of rain. Snow level 5900 feet lowering to 5100 feet after midnight . Mostly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNE Happy Camp CA
 41.96°N 123.25°W (Elev. 5138 ft)
4:41 pm PDT Apr 16, 2026
6pm PDT Apr 16, 2026-6pm PDT Apr 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database