Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

ROCK CREEK (RCEC1)

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

NA

32°F

0°C

Humidity 59%
Wind Speed W 5 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill27°F (-3°C)
Last update 09 Dec 11:04 PM PST
Extended Forecast for

Chalfant CA

  • Tonight

    Tonight: Mostly clear, with a low around 37. Northwest wind around 10 mph.

    Low: 37 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 69. North wind around 5 mph becoming calm  in the morning.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 37. Northwest wind around 5 mph.

    Low: 37 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 70. North wind around 5 mph becoming calm  in the morning.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 36. Northwest wind 5 to 10 mph.

    Low: 36 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 70. Northwest wind around 5 mph becoming calm  in the morning.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 35.

    Low: 35 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 37. Northwest wind around 10 mph.
Wednesday
Sunny, with a high near 69. North wind around 5 mph becoming calm in the morning.
Wednesday Night
Clear, with a low around 37. Northwest wind around 5 mph.
Thursday
Sunny, with a high near 70. North wind around 5 mph becoming calm in the morning.
Thursday Night
Clear, with a low around 36. Northwest wind 5 to 10 mph.
Friday
Sunny, with a high near 70. Northwest wind around 5 mph becoming calm in the morning.
Friday Night
Clear, with a low around 35.
Saturday
Sunny, with a high near 69.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 34.
Monday
Mostly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Chalfant CA
 37.54°N 118.38°W (Elev. 4298 ft)
10:30 pm PST Dec 9, 2025
11pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database