Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Emigrant Gap, Blue Canyon Nyack Airport (KBLU)

Lat: 39.27611°NLon: 120.70806°WElev: 5282.0ft.

Clear

51°F

11°C

Humidity 56%
Wind Speed W 3 MPH
Barometer 30.37 in (1028.45 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 08 Dec 04:52 PM PST
Extended Forecast for

4 Miles NNE Donner Summit CA

  • Tonight

    Tonight: Mostly clear, with a low around 34. Northwest wind 3 to 6 mph.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 48. West northwest wind 3 to 6 mph.

    High: 48 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 36. Northeast wind around 7 mph.

    Low: 36 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 48. East northeast wind around 6 mph becoming light and variable  in the afternoon.

    High: 48 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36. East northeast wind around 7 mph becoming southeast after midnight.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Thursday Night

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

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 34. Northwest wind 3 to 6 mph.
Tuesday
Sunny, with a high near 48. West northwest wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 36. Northeast wind around 7 mph.
Wednesday
Sunny, with a high near 48. East northeast wind around 6 mph becoming light and variable in the afternoon.
Wednesday Night
Mostly clear, with a low around 36. East northeast wind around 7 mph becoming southeast after midnight.
Thursday
Sunny, with a high near 48.
Thursday Night
Mostly clear, with a low around 34.
Friday
Sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 33.
Saturday
Sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 32.
Monday
A slight chance of snow showers. Mostly sunny, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Donner Summit CA
 39.38°N 120.36°W (Elev. 8399 ft)
1:20 pm PST Dec 8, 2025
5pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database