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

Riverton Regional Airport (KRIW)

Lat: 43.06219°NLon: 108.44701°WElev: 5443.0ft.

Clear

12°F

-11°C

Humidity 85%
Wind Speed ENE 4 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 21 Jan 06:30 AM MST
Extended Forecast for

Shoshoni WY

  • Today

    Today: Sunny, with a high near 35. Calm wind becoming north around 5 mph in the afternoon.

    High: 35 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 8. Light east northeast wind.

    Low: 8 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 29. Light and variable wind becoming north northeast 5 to 7 mph in the afternoon.

    High: 29 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 6. Wind chill values as low as -5. East wind 8 to 10 mph.

    Low: 6 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow showers. Mostly cloudy, with a high near 19. East wind 5 to 8 mph becoming north northeast in the afternoon.

    High: 19 °F

    Slight Chance
    Snow Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around -2. North northeast wind 5 to 8 mph becoming calm after midnight.

    Low: -2 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 24. Calm wind.

    High: 24 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 1.

    Low: 1 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 35. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 8. Light east northeast wind.
Thursday
Mostly sunny, with a high near 29. Light and variable wind becoming north northeast 5 to 7 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 6. Wind chill values as low as -5. East wind 8 to 10 mph.
Friday
A 20 percent chance of snow showers. Mostly cloudy, with a high near 19. East wind 5 to 8 mph becoming north northeast in the afternoon.
Friday Night
Partly cloudy, with a low around -2. North northeast wind 5 to 8 mph becoming calm after midnight.
Saturday
Sunny, with a high near 24. Calm wind.
Saturday Night
Partly cloudy, with a low around 1.
Sunday
Mostly sunny, with a high near 28.
Sunday Night
Partly cloudy, with a low around 5.
Monday
Mostly sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Mostly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shoshoni WY
 43.23°N 108.11°W (Elev. 4800 ft)
Last Update:
6:31 am MST Jan 21, 2026
Forecast Valid:
6am MST Jan 21, 2026-6pm MST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation