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

Snow Squalls May Impact the Northeast on Thursday; Dangerously Cold Arctic Air Impact the North-Central US

Snow showers and snow squalls are likely to develop across the Northeast on Thursday. Lake effect snow will persist downwind of the Great Lakes. An arctic blast will bring frigid temperatures, gusty winds and dangerous wind chills to the Northern Plains before expanding to the South and East. A major winter storm will begin impacting the Southern Plains and Lower Mississippi Valley Friday. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

21°F

-6°C

Humidity 57%
Wind Speed N 0 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 21 Jan 09:05 PM MST
Extended Forecast for

Riverton WY

  • Tonight

    Tonight: Partly cloudy, with a low around 7. Light and variable wind.

    Low: 7 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 33. Calm wind becoming north northeast 5 to 8 mph in the afternoon.

    High: 33 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 6. Wind chill values as low as -5. East northeast 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 21. Wind chill values as low as -5. East northeast wind 6 to 11 mph.

    High: 21 °F

    Slight Chance
    Snow Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around -2. North northeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: -2 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 24. Calm wind becoming east around 5 mph in the afternoon.

    High: 24 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 1. Southeast wind around 6 mph becoming southwest in the evening.

    Low: 1 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 1.

    Low: 1 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 7. Light and variable wind.
Thursday
Mostly sunny, with a high near 33. Calm wind becoming north northeast 5 to 8 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 6. Wind chill values as low as -5. East northeast wind 8 to 10 mph.
Friday
A 20 percent chance of snow showers. Mostly cloudy, with a high near 21. Wind chill values as low as -5. East northeast wind 6 to 11 mph.
Friday Night
Partly cloudy, with a low around -2. North northeast wind 5 to 10 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 24. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 1. Southeast wind around 6 mph becoming southwest in the evening.
Sunday
Mostly sunny, with a high near 29.
Sunday Night
Mostly clear, with a low around 1.
Monday
Mostly sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 10.
Tuesday
Mostly sunny, with a high near 42.
Tuesday Night
Partly cloudy, with a low around 12.
Wednesday
Mostly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
Last Update:
7:47 pm MST Jan 21, 2026
Forecast Valid:
9pm MST Jan 21, 2026-6pm MST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

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