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

28°F

-2°C

Humidity 99%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility 1.24 mi
Last update 10 Dec 12:42 AM MST
Extended Forecast for

19 Miles NW South Pass City WY

Winter Weather Advisory December 10, 12:56am until December 10, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 10, 12:56am until December 10, 05:00pm

    NOW until 5:00pm Wed

    Winter Weather Advisory

  • Overnight

    Low: 21 °F

    Chance Snow
    and Blowing
    Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow before 3pm.  Areas of blowing snow. Partly sunny, with a high near 34. Very windy, with a west northwest wind 34 to 38 mph, with gusts as high as 60 mph.

    High: 34 °F

    Slight Chance
    Snow and
    Areas Blowing
    Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 25. Very windy, with a west wind 38 to 43 mph, with gusts as high as 60 mph.

    Low: 25 °F

    Partly Cloudy
    and Very
    Windy

  • Thursday

    Thursday: Mostly sunny, with a high near 30. Very windy, with a west wind 38 to 43 mph decreasing to 30 to 35 mph in the morning. Winds could gust as high as 60 mph.

    High: 30 °F

    Mostly Sunny
    and Very
    Windy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 20. Windy, with a west wind 28 to 31 mph, with gusts as high as 44 mph.

    Low: 20 °F

    Partly Cloudy
    and Windy

  • Friday

    Friday: Partly sunny, with a high near 25. Windy, with a west wind 23 to 29 mph, with gusts as high as 40 mph.

    High: 25 °F

    Partly Sunny
    and Windy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 19. Windy, with a west wind 29 to 33 mph, with gusts as high as 45 mph.

    Low: 19 °F

    Mostly Cloudy
    and Windy

  • Saturday

    Saturday: Mostly sunny, with a high near 27. Windy.

    High: 27 °F

    Mostly Sunny
    and Windy

Detailed Forecast

Overnight
A 40 percent chance of snow, mainly after 2am. Widespread blowing snow, mainly after 2am. Mostly cloudy, with a low around 21. Breezy, with a west wind 14 to 24 mph, with gusts as high as 33 mph. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
A 20 percent chance of snow before 3pm. Areas of blowing snow. Partly sunny, with a high near 34. Very windy, with a west northwest wind 34 to 38 mph, with gusts as high as 60 mph.
Wednesday Night
Partly cloudy, with a low around 25. Very windy, with a west wind 38 to 43 mph, with gusts as high as 60 mph.
Thursday
Mostly sunny, with a high near 30. Very windy, with a west wind 38 to 43 mph decreasing to 30 to 35 mph in the morning. Winds could gust as high as 60 mph.
Thursday Night
Partly cloudy, with a low around 20. Windy, with a west wind 28 to 31 mph, with gusts as high as 44 mph.
Friday
Partly sunny, with a high near 25. Windy, with a west wind 23 to 29 mph, with gusts as high as 40 mph.
Friday Night
Mostly cloudy, with a low around 19. Windy, with a west wind 29 to 33 mph, with gusts as high as 45 mph.
Saturday
Mostly sunny, with a high near 27. Windy.
Saturday Night
Partly cloudy, with a low around 21. Breezy.
Sunday
Sunny, with a high near 30. Breezy.
Sunday Night
Partly cloudy, with a low around 20. Blustery.
Monday
Mostly sunny, with a high near 27. Blustery.
Monday Night
Mostly cloudy, with a low around 19. Breezy.
Tuesday
A chance of snow showers. Partly sunny, with a high near 24. Windy.
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ABOUT THIS FORECAST

 
Point Forecast:
19 Miles NW South Pass City WY
 42.64°N 109.07°W (Elev. 11434 ft)
12:01 am MST Dec 10, 2025
12am 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