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

43°F

6°C

Humidity 41%
Wind Speed NW 6 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 13 Apr 01:04 PM PDT
Extended Forecast for

13 Miles W Chalfant CA

  • This Afternoon

    This Afternoon: A 40 percent chance of snow showers, mainly before 5pm. Some thunder is also possible.  Partly sunny, with a high near 48. Northwest wind around 10 mph.  Little or no snow accumulation expected.

    High: 48 °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 31. Northwest wind 10 to 15 mph.

    Low: 31 °F

    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57. West wind 5 to 15 mph.

    High: 57 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 36. West wind around 10 mph.

    Low: 36 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61. West wind around 10 mph becoming south in the morning.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36. West wind around 15 mph.

    Low: 36 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27. Blustery.

    Low: 27 °F

    Mostly Clear
    and Blustery

  • Friday

    Friday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of snow showers, mainly before 5pm. Some thunder is also possible. Partly sunny, with a high near 48. Northwest wind around 10 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 31. Northwest wind 10 to 15 mph.
Tuesday
Sunny, with a high near 57. West wind 5 to 15 mph.
Tuesday Night
Mostly clear, with a low around 36. West wind around 10 mph.
Wednesday
Mostly sunny, with a high near 61. West wind around 10 mph becoming south in the morning.
Wednesday Night
Partly cloudy, with a low around 36. West wind around 15 mph.
Thursday
Sunny, with a high near 54.
Thursday Night
Mostly clear, with a low around 27. Blustery.
Friday
Sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 35.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles W Chalfant CA
 37.53°N 118.6°W (Elev. 6611 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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