Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

ROCK CREEK (RCEC1)

Lat: 37.55983°NLon: 118.67841°WElev: 7103.0ft.

NA

45°F

7°C

Humidity 41%
Wind Speed NNW 5 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Wind Chill42°F (6°C)
Last update 13 Apr 04:04 PM PDT
Extended Forecast for

9 Miles ESE Chalfant CA

  • This Afternoon

    This Afternoon: A 30 percent chance of snow showers, mainly before 5pm.  Partly sunny, with a high near 29. Northwest wind around 15 mph.  Total daytime snow accumulation of 1 to 2 inches possible.

    High: 29 °F

    Chance Snow
    Showers

  • Tonight

    Tonight: A 20 percent chance of snow showers before 8pm.  Mostly cloudy, then gradually becoming clear, with a low around 22. Blustery, with a north wind around 20 mph, with gusts as high as 30 mph.

    Low: 22 °F

    Blustery.
    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 38. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 38 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 28. West wind 5 to 10 mph.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 44. Southwest wind 10 to 15 mph.

    High: 44 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 28 °F

    Partly Cloudy
    then Mostly
    Clear and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 41. Windy.

    High: 41 °F

    Sunny and
    Windy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 19. Blustery.

    Low: 19 °F

    Mostly Clear
    and Blustery

  • Friday

    Friday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of snow showers, mainly before 5pm. Partly sunny, with a high near 29. Northwest wind around 15 mph. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
A 20 percent chance of snow showers before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 22. Blustery, with a north wind around 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 38. West wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 28. West wind 5 to 10 mph.
Wednesday
Increasing clouds, with a high near 44. Southwest wind 10 to 15 mph.
Wednesday Night
Partly cloudy, with a low around 28. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 41. Windy.
Thursday Night
Mostly clear, with a low around 19. Blustery.
Friday
Sunny, with a high near 39.
Friday Night
Mostly clear, with a low around 27.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 46. Breezy.
Sunday Night
Partly cloudy, with a low around 30. Breezy.
Monday
Mostly sunny, with a high near 42. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ESE Chalfant CA
 37.47°N 118.22°W (Elev. 10154 ft)
4:30 pm PDT Apr 13, 2026
4pm PDT Apr 13, 2026-6pm PDT Apr 20, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database