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

WY28 - South Pass (KSOU)

Lat: 42.47752°NLon: 108.8444°WElev: 8196.0ft.

NA

32°F

0°C

Humidity 93%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility 1.24 mi
Last update 09 Dec 10:12 PM MST
Extended Forecast for

3 Miles NNE South Pass City WY

Winter Weather Advisory December 9, 10:20pm until December 10, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 9, 10:20pm until December 10, 05:00pm

    NOW until 5:00pm Wed

    Winter Weather Advisory

  • Tonight

    Low: 28 °F

    Breezy.
    Mostly Cloudy
    then Isolated
    Snow Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 42. Windy, with a west wind 28 to 30 mph, with gusts as high as 41 mph.

    High: 42 °F

    Partly Sunny
    and Windy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31. Breezy, with a west southwest wind around 24 mph, with gusts as high as 36 mph.

    Low: 31 °F

    Mostly Cloudy
    and Breezy

  • Thursday

    Thursday: Mostly sunny, with a high near 42. Breezy, with a west wind 21 to 24 mph, with gusts as high as 36 mph.

    High: 42 °F

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31. Breezy, with a west wind 17 to 20 mph, with gusts as high as 29 mph.

    Low: 31 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: Mostly sunny, with a high near 39. Breezy, with a west wind 17 to 22 mph, with gusts as high as 33 mph.

    High: 39 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. Breezy, with a west wind around 21 mph, with gusts as high as 31 mph.

    Low: 30 °F

    Partly Cloudy
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 40. Breezy.

    High: 40 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Tonight
Isolated snow showers after midnight. Mostly cloudy, with a low around 28. Breezy, with a west wind 16 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 42. Windy, with a west wind 28 to 30 mph, with gusts as high as 41 mph.
Wednesday Night
Mostly cloudy, with a low around 31. Breezy, with a west southwest wind around 24 mph, with gusts as high as 36 mph.
Thursday
Mostly sunny, with a high near 42. Breezy, with a west wind 21 to 24 mph, with gusts as high as 36 mph.
Thursday Night
Partly cloudy, with a low around 31. Breezy, with a west wind 17 to 20 mph, with gusts as high as 29 mph.
Friday
Mostly sunny, with a high near 39. Breezy, with a west wind 17 to 22 mph, with gusts as high as 33 mph.
Friday Night
Partly cloudy, with a low around 30. Breezy, with a west wind around 21 mph, with gusts as high as 31 mph.
Saturday
Mostly sunny, with a high near 40. Breezy.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 42. Breezy.
Sunday Night
Partly cloudy, with a low around 29. Breezy.
Monday
Mostly sunny, with a high near 41. Breezy.
Monday Night
Partly cloudy, with a low around 29. Breezy.
Tuesday
Mostly sunny, with a high near 38. Breezy.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE South Pass City WY
 42.51°N 108.79°W (Elev. 8399 ft)
9:47 pm MST Dec 9, 2025
10pm MST Dec 9, 2025-6pm MST Dec 16, 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