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

Late January Extreme Cold; Watching East Coast Storm Threat This Weekend

The next blast of Arctic air surges south down the Plains, across the Great Lakes and through the Southeast and East Friday through Saturday. This could be longest duration of cold in several decades. Forecast models are being closely monitored for potential of another significant winter storm to impact the eastern United States this coming weekend. Confidence in coastal impacts has increased. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

30°F

-1°C

Humidity 39%
Wind Speed WNW 11 MPH
Barometer 30.25 in (1024.38 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 27 Jan 07:05 PM MST
Extended Forecast for

3 Miles WNW Arapahoe WY

  • Tonight

    Tonight: Partly cloudy, with a low around 15. South southwest wind 5 to 7 mph becoming west after midnight.

    Low: 15 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow showers after 1pm. Mostly cloudy, with a high near 39. West southwest wind around 5 mph becoming calm in the afternoon.

    High: 39 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: Cloudy during the early evening, then gradual clearing, with a low around 17. Northwest wind 7 to 10 mph becoming west southwest after midnight.

    Low: 17 °F

    Gradual
    Clearing

  • Thursday

    Thursday: Sunny, with a high near 44. West southwest wind 6 to 8 mph becoming east in the afternoon.

    High: 44 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 16. West southwest wind around 6 mph.

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 45. West southwest wind around 5 mph becoming light and variable.

    High: 45 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 21. North wind around 6 mph becoming west southwest in the evening.

    Low: 21 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 15. South southwest wind 5 to 7 mph becoming west after midnight.
Wednesday
A 20 percent chance of snow showers after 1pm. Mostly cloudy, with a high near 39. West southwest wind around 5 mph becoming calm in the afternoon.
Wednesday Night
Cloudy during the early evening, then gradual clearing, with a low around 17. Northwest wind 7 to 10 mph becoming west southwest after midnight.
Thursday
Sunny, with a high near 44. West southwest wind 6 to 8 mph becoming east in the afternoon.
Thursday Night
Partly cloudy, with a low around 16. West southwest wind around 6 mph.
Friday
Mostly sunny, with a high near 45. West southwest wind around 5 mph becoming light and variable.
Friday Night
Mostly cloudy, with a low around 21. North wind around 6 mph becoming west southwest in the evening.
Saturday
Mostly sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 49.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Arapahoe WY
 42.99°N 108.56°W (Elev. 5197 ft)
Last Update:
5:33 pm MST Jan 27, 2026
Forecast Valid:
7pm MST Jan 27, 2026-6pm MST Feb 3, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation