Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Hazardous Weather Conditions

Current conditions at

WY28 - South Pass (KSOU)

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

light snow

23°F

-5°C

Humidity 100%
Wind Speed SW 13 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility 1.24 mi
Wind Chill11°F (-12°C)
Last update 27 Dec 12:42 PM MST
Extended Forecast for

21 Miles ENE South Pass City WY

  • This Afternoon

    This Afternoon: Sunny, with a high near 35. Windy, with a west southwest wind 24 to 33 mph, with gusts as high as 55 mph.

    High: 35 °F

    Sunny and
    Windy

  • Tonight

    Tonight: A 30 percent chance of snow showers, mainly before 3am.  Partly cloudy, with a low around 8. Wind chill values as low as zero. North northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 8 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: Sunny, with a high near 21. Wind chill values as low as zero. West wind 5 to 7 mph.

    High: 21 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 10. Wind chill values as low as zero. South southwest wind 3 to 7 mph.

    Low: 10 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 33. South southwest wind around 9 mph.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. South southwest wind around 9 mph.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. South southwest wind around 7 mph.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 35. Windy, with a west southwest wind 24 to 33 mph, with gusts as high as 55 mph.
Tonight
A 30 percent chance of snow showers, mainly before 3am. Partly cloudy, with a low around 8. Wind chill values as low as zero. North northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 21. Wind chill values as low as zero. West wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 10. Wind chill values as low as zero. South southwest wind 3 to 7 mph.
Monday
Sunny, with a high near 33. South southwest wind around 9 mph.
Monday Night
Mostly clear, with a low around 18. South southwest wind around 9 mph.
Tuesday
Mostly sunny, with a high near 39. South southwest wind around 7 mph.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Sunny, with a high near 44.
Wednesday Night
Partly cloudy, with a low around 28.
New Year's Day
Partly sunny, with a high near 45. Breezy.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 44. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles ENE South Pass City WY
 42.56°N 108.41°W (Elev. 6398 ft)
12:01 pm MST Dec 27, 2025
12pm MST Dec 27, 2025-6pm MST Jan 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database