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 >

Current conditions at

Riverton Regional Airport (KRIW)

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

Mostly Cloudy

16°F

-9°C

Humidity 72%
Wind Speed NNE 11 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill3°F (-16°C)
Last update 28 Dec 02:35 AM MST
Extended Forecast for

Shoshoni WY

  • Overnight

    Overnight: A 40 percent chance of snow before 4am.  Partly cloudy, with a low around 12. North wind around 10 mph.  Total nighttime snow accumulation of less than a half inch possible.

    Low: 12 °F

    Chance Snow

  • Sunday

    Sunday: Sunny, with a high near 28. Light and variable wind.

    High: 28 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 7. Wind chill values as low as zero. Light east wind.

    Low: 7 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 34. Wind chill values as low as zero. Calm wind.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 13. Light southeast wind.

    Low: 13 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37. Calm wind.

    High: 37 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 16. Calm wind becoming south around 5 mph after midnight.

    Low: 16 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of snow before 4am. Partly cloudy, with a low around 12. North wind around 10 mph. Total nighttime snow accumulation of less than a half inch possible.
Sunday
Sunny, with a high near 28. Light and variable wind.
Sunday Night
Mostly clear, with a low around 7. Wind chill values as low as zero. Light east wind.
Monday
Sunny, with a high near 34. Wind chill values as low as zero. Calm wind.
Monday Night
Mostly clear, with a low around 13. Light southeast wind.
Tuesday
Mostly sunny, with a high near 37. Calm wind.
Tuesday Night
Mostly clear, with a low around 16. Calm wind becoming south around 5 mph after midnight.
Wednesday
Sunny, with a high near 44.
Wednesday Night
Partly cloudy, with a low around 21.
New Year's Day
Partly sunny, with a high near 48.
Thursday Night
Mostly cloudy, with a low around 25.
Friday
Partly sunny, with a high near 49.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
Shoshoni WY
 43.23°N 108.11°W (Elev. 4800 ft)
1:18 am MST Dec 28, 2025
2am MST Dec 28, 2025-6pm MST Jan 3, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database