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

53°F

12°C

Humidity 88%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 15 Apr 12:52 PM PDT
Extended Forecast for

11 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
  • This Afternoon

    This Afternoon: Rain, possibly mixing with snow after 3pm, then gradually ending.  Snow level 5200 feet lowering to 4400 feet. High near 38. West wind 13 to 15 mph, with gusts as high as 23 mph.  Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.

    High: 38 °F

    Rain/Snow

  • Tonight

    Tonight: A 30 percent chance of snow, mainly between 7pm and 9pm.  Partly cloudy, with a low around 20. North wind 6 to 10 mph.  New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Chance Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 41. North wind 7 to 14 mph, with gusts as high as 21 mph.

    High: 41 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. North wind 7 to 13 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54. East northeast wind 6 to 8 mph becoming north northwest in the afternoon.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of rain after 11pm.  Snow level 7800 feet lowering to 7000 feet after midnight . Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

  • Sunday

    Sunday: A chance of rain.  Snow level 6300 feet. Mostly cloudy, with a high near 49.

    High: 49 °F

    Chance Rain

Detailed Forecast

This Afternoon
Rain, possibly mixing with snow after 3pm, then gradually ending. Snow level 5200 feet lowering to 4400 feet. High near 38. West wind 13 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A 30 percent chance of snow, mainly between 7pm and 9pm. Partly cloudy, with a low around 20. North wind 6 to 10 mph. New snow accumulation of less than a half inch possible.
Thursday
Sunny, with a high near 41. North wind 7 to 14 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 28. North wind 7 to 13 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 54. East northeast wind 6 to 8 mph becoming north northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 58.
Saturday Night
A chance of rain after 11pm. Snow level 7800 feet lowering to 7000 feet after midnight . Mostly cloudy, with a low around 41.
Sunday
A chance of rain. Snow level 6300 feet. Mostly cloudy, with a high near 49.
Sunday Night
Rain likely before 2am, then snow likely, possibly mixed with rain. Snow level 6200 feet lowering to 5300 feet after midnight . Mostly cloudy, with a low around 39.
Monday
Rain and snow likely. Snow level 5300 feet. Mostly cloudy, with a high near 48.
Monday Night
A chance of rain and snow. Snow level 5500 feet. Mostly cloudy, with a low around 38.
Tuesday
A chance of rain and snow. Snow level 5100 feet rising to 5800 feet in the afternoon. Mostly cloudy, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NNE Happy Camp CA
 41.94°N 123.25°W (Elev. 4360 ft)
12:57 pm PDT Apr 15, 2026
1pm 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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