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 54%
Wind Speed N 0 MPH
Barometer 30.38 in (1028.79 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 08 Dec 05:52 PM PST
Extended Forecast for

4 Miles SW Donner Summit CA

  • Tonight

    Tonight: Mostly clear, with a low around 35. Light northeast wind.

    Low: 35 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57. Calm wind.

    High: 57 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38. East northeast wind around 6 mph.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 58. East northeast wind around 5 mph becoming calm  in the morning.

    High: 58 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 38. East northeast wind around 6 mph.

    Low: 38 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 35.

    Low: 35 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 35. Light northeast wind.
Tuesday
Sunny, with a high near 57. Calm wind.
Tuesday Night
Mostly clear, with a low around 38. East northeast wind around 6 mph.
Wednesday
Sunny, with a high near 58. East northeast wind around 5 mph becoming calm in the morning.
Wednesday Night
Clear, with a low around 38. East northeast wind around 6 mph.
Thursday
Sunny, with a high near 58.
Thursday Night
Clear, with a low around 35.
Friday
Sunny, with a high near 59.
Friday Night
Mostly clear, with a low around 35.
Saturday
Sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Mostly sunny, with a high near 49.
Sunday Night
Partly cloudy, with a low around 33.
Monday
A slight chance of rain and snow showers. Mostly sunny, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Donner Summit CA
 39.27°N 120.45°W (Elev. 6798 ft)
1:20 pm PST Dec 8, 2025
6pm 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