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

45°F

7°C

Humidity 93%
Wind Speed SW 9 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 15 Apr 04:52 AM PDT
Extended Forecast for

12 Miles NNE Happy Camp CA

Freeze Watch April 17, 03:00am until April 17, 09:00am
Frost Advisory April 16, 03:00am until April 16, 09:00am
Click here for hazard details and duration
Freeze Watch
Frost Advisory
  • Overnight

    Overnight: A 50 percent chance of snow.  Mostly cloudy, with a low around 33. South southwest wind around 15 mph, with gusts as high as 23 mph.  Total nighttime snow accumulation of less than a half inch possible.

    Low: 33 °F

    Chance Snow

  • Wednesday

    Wednesday: Rain and snow before 4pm, then a chance of snow after 5pm.  High near 35. South southwest wind 14 to 18 mph, with gusts as high as 28 mph.  Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow, mainly before 10pm.  Partly cloudy, with a low around 24. West northwest wind 6 to 14 mph becoming north in the evening. Winds could gust as high as 21 mph.  New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Chance Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 38. North wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 38 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 27. Northeast wind 8 to 14 mph, with gusts as high as 21 mph.

    Low: 27 °F

    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 5500 feet rising to 7100 feet in the afternoon. Mostly sunny, with a high near 53.

    High: 53 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly after 11pm.  Snow level 7500 feet lowering to 6600 feet after midnight . Mostly cloudy, with a low around 40.

    Low: 40 °F

    Rain Likely

Detailed Forecast

Overnight
A 50 percent chance of snow. Mostly cloudy, with a low around 33. South southwest wind around 15 mph, with gusts as high as 23 mph. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
Rain and snow before 4pm, then a chance of snow after 5pm. High near 35. South southwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Wednesday Night
A 40 percent chance of snow, mainly before 10pm. Partly cloudy, with a low around 24. West northwest wind 6 to 14 mph becoming north in the evening. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.
Thursday
Sunny, with a high near 38. North wind 6 to 15 mph, with gusts as high as 23 mph.
Thursday Night
Clear, with a low around 27. Northeast wind 8 to 14 mph, with gusts as high as 21 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 5500 feet rising to 7100 feet in the afternoon. Mostly sunny, with a high near 53.
Saturday Night
Rain likely, mainly after 11pm. Snow level 7500 feet lowering to 6600 feet after midnight . Mostly cloudy, with a low around 40.
Sunday
Rain likely. Snow level 5700 feet. Mostly cloudy, with a high near 44.
Sunday Night
Rain and snow likely. Snow level 5700 feet lowering to 5000 feet after midnight . Mostly cloudy, with a low around 39.
Monday
Rain and snow likely. Snow level rising to 5700 feet in the afternoon. Mostly cloudy, with a high near 48.
Monday Night
A chance of rain and snow. Snow level 6000 feet lowering to 5400 feet after midnight . Mostly cloudy, with a low around 39.
Tuesday
A chance of rain and snow. Snow level 5200 feet rising to 6200 feet in the afternoon. Partly sunny, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNE Happy Camp CA
 41.95°N 123.31°W (Elev. 4911 ft)
4:56 am PDT Apr 15, 2026
5am PDT Apr 15, 2026-6pm PDT Apr 21, 2026
 
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Additional Resources

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Hourly Weather Forecast

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