National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Hazardous Weather Conditions

Current conditions at

WY28 - South Pass (KSOU)

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

NA

25°F

-4°C

Humidity 54%
Wind Speed WNW 18 MPH
Barometer NA
Dewpoint 10°F (-12°C)
Visibility 1.24 mi
Wind Chill11°F (-12°C)
Last update 21 Jan 02:42 PM MST
Extended Forecast for

15 Miles NW South Pass City WY

  • This Afternoon

    This Afternoon: Sunny, with a high near 19. Wind chill values as low as zero. Blustery, with a west northwest wind around 18 mph, with gusts as high as 28 mph.

    High: 19 °F

    Sunny and
    Blustery

  • Tonight

    Tonight: Partly cloudy, with a low around 7. Wind chill values as low as -10. Blustery, with a west northwest wind 17 to 21 mph, with gusts as high as 30 mph.

    Low: 7 °F

    Partly Cloudy
    and Blustery

  • Thursday

    Thursday: Mostly sunny, with a high near 19. Wind chill values as low as -10. Blustery, with a west northwest wind 13 to 16 mph, with gusts as high as 24 mph.

    High: 19 °F

    Mostly Sunny
    and Blustery
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 0. Wind chill values as low as -15. West wind 10 to 14 mph.

    Low: 0 °F

    Slight Chance
    Snow Showers

  • Friday

    Friday: A 30 percent chance of snow showers, mainly after 11am. Mostly cloudy and cold, with a high near 4. West wind 10 to 13 mph.

    High: 4 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around -10. West wind 10 to 14 mph.

    Low: -10 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 0. West wind 10 to 13 mph.

    High: 0 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around -6. Breezy.

    Low: -6 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Mostly sunny and cold, with a high near 6. Breezy.

    High: 6 °F

    Cold and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 19. Wind chill values as low as zero. Blustery, with a west northwest wind around 18 mph, with gusts as high as 28 mph.
Tonight
Partly cloudy, with a low around 7. Wind chill values as low as -10. Blustery, with a west northwest wind 17 to 21 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 19. Wind chill values as low as -10. Blustery, with a west northwest wind 13 to 16 mph, with gusts as high as 24 mph.
Thursday Night
A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 0. Wind chill values as low as -15. West wind 10 to 14 mph.
Friday
A 30 percent chance of snow showers, mainly after 11am. Mostly cloudy and cold, with a high near 4. West wind 10 to 13 mph.
Friday Night
A 40 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around -10. West wind 10 to 14 mph.
Saturday
Mostly sunny and cold, with a high near 0. West wind 10 to 13 mph.
Saturday Night
Mostly clear, with a low around -6. Breezy.
Sunday
Mostly sunny and cold, with a high near 6. Breezy.
Sunday Night
Partly cloudy, with a low around -4. Windy.
Monday
Mostly sunny and cold, with a high near 10. Windy.
Monday Night
Mostly cloudy, with a low around 5. Windy.
Tuesday
Mostly sunny, with a high near 16. Windy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
15 Miles NW South Pass City WY
 42.62°N 109.01°W (Elev. 11847 ft)
Last Update:
2:31 pm MST Jan 21, 2026
Forecast Valid:
2pm MST Jan 21, 2026-6pm MST Jan 27, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation