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

42°F

6°C

Humidity 42%
Wind Speed WNW 4 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 13 Apr 12:04 PM PDT
Extended Forecast for

12 Miles ESE Chalfant CA

  • This Afternoon

    This Afternoon: A 40 percent chance of snow showers, mainly before 5pm.  Partly sunny, with a high near 31. Northeast wind around 15 mph becoming north. Winds could gust as high as 25 mph.  Little or no snow accumulation expected.

    High: 31 °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 21. Blustery, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 21 °F

    Blustery.
    Slight Chance
    Snow Showers
    then Clear

  • Tuesday

    Tuesday: Sunny, with a high near 41. Northwest wind 10 to 15 mph becoming west in the morning.

    High: 41 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 28. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 47. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon.

    High: 47 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • 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
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 42. Breezy.

    High: 42 °F

    Sunny then
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 18. Windy.

    Low: 18 °F

    Mostly Clear
    and Windy

  • Friday

    Friday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of snow showers, mainly before 5pm. Partly sunny, with a high near 31. Northeast wind around 15 mph becoming north. Winds could gust as high as 25 mph. Little or no snow accumulation expected.
Tonight
A 20 percent chance of snow showers before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 21. Blustery, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 41. Northwest wind 10 to 15 mph becoming west in the morning.
Tuesday Night
Mostly clear, with a low around 28. West wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Increasing clouds, with a high near 47. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon.
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 42. Breezy.
Thursday Night
Mostly clear, with a low around 18. Windy.
Friday
Sunny, with a high near 40.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 45. Breezy.
Saturday Night
Mostly cloudy, with a low around 30. Breezy.
Sunday
Mostly sunny, with a high near 49. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles ESE Chalfant CA
 37.46°N 118.16°W (Elev. 9800 ft)
11:30 am PDT Apr 13, 2026
1pm PDT Apr 13, 2026-6pm PDT Apr 19, 2026
 
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Additional Resources

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