Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

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

NA

46°F

8°C

Humidity 73%
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 14 Apr 10:52 PM PDT
Extended Forecast for

12 Miles NNE Happy Camp CA

Freeze Watch April 17, 03:00am until April 17, 09:00am
Click here for hazard details and duration
Freeze Watch
  • Tonight

    Tonight: Snow likely, mainly after 3am.  Mostly cloudy, with a low around 32. South southwest wind 13 to 16 mph, with gusts as high as 24 mph.  Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.

    Low: 32 °F

    Snow Likely

  • Wednesday

    Wednesday: Snow, possibly mixed with rain, becoming all snow after noon.  High near 35. South southwest wind 14 to 21 mph, with gusts as high as 31 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 35 °F

    Rain/Snow
    then Snow

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before 11pm.  Mostly cloudy, with a low around 22. West northwest wind 7 to 13 mph becoming north in the evening. Winds could gust as high as 20 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Snow Likely
    then Slight
    Chance Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 38. Breezy, with a north wind 8 to 13 mph increasing to 18 to 23 mph in the morning. Winds could gust as high as 34 mph.

    High: 38 °F

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27. Northeast wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain after 11am.  Snow level rising to 6700 feet in the afternoon. Partly sunny, with a high near 52.

    High: 52 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly after 11pm.  Snow level 7200 feet lowering to 6200 feet after midnight . Mostly cloudy, with a low around 39.

    Low: 39 °F

    Rain Likely

Detailed Forecast

Tonight
Snow likely, mainly after 3am. Mostly cloudy, with a low around 32. South southwest wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.
Wednesday
Snow, possibly mixed with rain, becoming all snow after noon. High near 35. South southwest wind 14 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
Snow likely, mainly before 11pm. Mostly cloudy, with a low around 22. West northwest wind 7 to 13 mph becoming north in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
Mostly sunny, with a high near 38. Breezy, with a north wind 8 to 13 mph increasing to 18 to 23 mph in the morning. Winds could gust as high as 34 mph.
Thursday Night
Mostly clear, with a low around 27. Northeast wind 10 to 20 mph, with gusts as high as 30 mph.
Friday
Sunny, with a high near 50.
Friday Night
Partly cloudy, with a low around 37.
Saturday
A slight chance of rain after 11am. Snow level rising to 6700 feet in the afternoon. Partly sunny, with a high near 52.
Saturday Night
Rain likely, mainly after 11pm. Snow level 7200 feet lowering to 6200 feet after midnight . Mostly cloudy, with a low around 39.
Sunday
Rain and snow, becoming all rain after 11am. Snow level 5700 feet lowering to 5100 feet. Mostly cloudy, with a high near 41.
Sunday Night
Rain and snow. Mostly cloudy, with a low around 35.
Monday
Rain and snow likely. Mostly cloudy, with a high near 40.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 36.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNE Happy Camp CA
 41.96°N 123.25°W (Elev. 5138 ft)
10:41 pm PDT Apr 14, 2026
11pm PDT Apr 14, 2026-6pm PDT Apr 21, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database