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

27°F

-3°C

Humidity 83%
Wind Speed WSW 18 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility 1.24 mi
Wind Chill14°F (-10°C)
Last update 10 Dec 05:12 AM MST
Extended Forecast for

10 Miles NNW South Pass City WY

Winter Weather Advisory December 10, 05:15am until December 10, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 10, 05:15am until December 10, 05:00pm

    NOW until 5:00pm Wed

    Winter Weather Advisory

  • Overnight

    Low: 22 °F

    Slight Chance
    Snow and
    Breezy

  • Wednesday

    Wednesday: A 10 percent chance of snow before 7am.  Mostly sunny, with a high near 38. Windy, with a west wind 28 to 33 mph decreasing to 22 to 27 mph in the afternoon. Winds could gust as high as 60 mph.

    High: 38 °F

    Windy. Slight
    Chance Snow
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27. Windy, with a west wind 25 to 33 mph, with gusts as high as 55 mph.

    Low: 27 °F

    Mostly Cloudy
    and Windy

  • Thursday

    Thursday: Mostly sunny, with a high near 37. Windy, with a west wind 28 to 33 mph decreasing to 21 to 26 mph in the afternoon. Winds could gust as high as 60 mph.

    High: 37 °F

    Mostly Sunny
    and Windy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. Breezy, with a west wind 20 to 22 mph, with gusts as high as 36 mph.

    Low: 26 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 36. Breezy, with a west wind around 23 mph, with gusts as high as 44 mph.

    High: 36 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 23. Windy, with a west wind 28 to 30 mph, with gusts as high as 50 mph.

    Low: 23 °F

    Mostly Cloudy
    and Windy

  • Saturday

    Saturday: Mostly sunny, with a high near 38. Breezy.

    High: 38 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

Detailed Forecast

Overnight
A 20 percent chance of snow. Partly cloudy, with a low around 22. Breezy, with a west wind around 21 mph, with gusts as high as 37 mph.
Wednesday
A 10 percent chance of snow before 7am. Mostly sunny, with a high near 38. Windy, with a west wind 28 to 33 mph decreasing to 22 to 27 mph in the afternoon. Winds could gust as high as 60 mph.
Wednesday Night
Mostly cloudy, with a low around 27. Windy, with a west wind 25 to 33 mph, with gusts as high as 55 mph.
Thursday
Mostly sunny, with a high near 37. Windy, with a west wind 28 to 33 mph decreasing to 21 to 26 mph in the afternoon. Winds could gust as high as 60 mph.
Thursday Night
Partly cloudy, with a low around 26. Breezy, with a west wind 20 to 22 mph, with gusts as high as 36 mph.
Friday
Partly sunny, with a high near 36. Breezy, with a west wind around 23 mph, with gusts as high as 44 mph.
Friday Night
Mostly cloudy, with a low around 23. Windy, with a west wind 28 to 30 mph, with gusts as high as 50 mph.
Saturday
Mostly sunny, with a high near 38. Breezy.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 40.
Sunday Night
Partly cloudy, with a low around 24. Breezy.
Monday
Mostly sunny, with a high near 38. Breezy.
Monday Night
Partly cloudy, with a low around 24. Breezy.
Tuesday
A slight chance of snow showers. Partly sunny, with a high near 35. Breezy.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNW South Pass City WY
 42.59°N 108.89°W (Elev. 9567 ft)
5:01 am MST Dec 10, 2025
5am MST Dec 10, 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