Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

WY28 - South Pass (KSOU)

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

NA

30°F

-1°C

Humidity 68%
Wind Speed W 19 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility 1.24 mi
Wind Chill18°F (-8°C)
Last update 08 Dec 02:26 PM MST
Extended Forecast for

9 Miles NE South Pass City WY

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

    This Afternoon: Partly sunny, with a high near 35. Breezy, with a west southwest wind 21 to 23 mph, with gusts as high as 39 mph.

    High: 35 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. Windy, with a southwest wind 22 to 26 mph, with gusts as high as 44 mph.

    Low: 28 °F

    Mostly Cloudy
    and Windy

  • Tuesday

    Tuesday: A slight chance of rain and snow showers between 11am and 4pm, then a slight chance of snow showers after 4pm.  Partly sunny, with a high near 41. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 47 mph.  Chance of precipitation is 20%.

    High: 41 °F

    Isolated
    Rain/Snow and
    Breezy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow showers.  Mostly cloudy, with a low around 27. Breezy, with a west wind 14 to 20 mph, with gusts as high as 34 mph.

    Low: 27 °F

    Chance Snow
    Showers and
    Breezy

  • Wednesday

    Wednesday: A chance of snow showers before 8am, then a chance of rain showers between 8am and 11am.  Snow level rising to 9200 feet in the afternoon. Partly sunny, with a high near 44. Windy, with a west wind 23 to 26 mph, with gusts as high as 45 mph.  Chance of precipitation is 30%.

    High: 44 °F

    Windy. Chance
    Rain/Snow
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34. Windy, with a west southwest wind 22 to 25 mph, with gusts as high as 44 mph.

    Low: 34 °F

    Mostly Cloudy
    and Windy

  • Thursday

    Thursday: Mostly sunny, with a high near 45. Breezy, with a west wind 21 to 23 mph, with gusts as high as 39 mph.

    High: 45 °F

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 30. Breezy.

    Low: 30 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 42. Breezy.

    High: 42 °F

    Partly Sunny
    and Breezy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 35. Breezy, with a west southwest wind 21 to 23 mph, with gusts as high as 39 mph.
Tonight
Mostly cloudy, with a low around 28. Windy, with a southwest wind 22 to 26 mph, with gusts as high as 44 mph.
Tuesday
A slight chance of rain and snow showers between 11am and 4pm, then a slight chance of snow showers after 4pm. Partly sunny, with a high near 41. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 47 mph. Chance of precipitation is 20%.
Tuesday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 27. Breezy, with a west wind 14 to 20 mph, with gusts as high as 34 mph.
Wednesday
A chance of snow showers before 8am, then a chance of rain showers between 8am and 11am. Snow level rising to 9200 feet in the afternoon. Partly sunny, with a high near 44. Windy, with a west wind 23 to 26 mph, with gusts as high as 45 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 34. Windy, with a west southwest wind 22 to 25 mph, with gusts as high as 44 mph.
Thursday
Mostly sunny, with a high near 45. Breezy, with a west wind 21 to 23 mph, with gusts as high as 39 mph.
Thursday Night
Mostly cloudy, with a low around 30. Breezy.
Friday
Partly sunny, with a high near 42. Breezy.
Friday Night
Mostly cloudy, with a low around 30. Breezy.
Saturday
Mostly sunny, with a high near 43. Breezy.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 43. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles NE South Pass City WY
 42.56°N 108.7°W (Elev. 7999 ft)
2:31 pm MST Dec 8, 2025
2pm MST Dec 8, 2025-6pm MST Dec 14, 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