Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

39°F

4°C

Humidity 41%
Wind Speed ENE 6 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 31 Dec 03:20 PM MST
Extended Forecast for

Riverton WY

  • This Afternoon

    This Afternoon: Sunny, with a high near 43. North northeast wind around 7 mph.

    High: 43 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 18. Light and variable wind becoming south around 5 mph.

    Low: 18 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Isolated showers between 3pm and 4pm.  Mostly cloudy, with a high near 44. Calm wind becoming north around 6 mph in the afternoon.  Chance of precipitation is 20%.

    High: 44 °F

    Mostly Cloudy
    then Isolated
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26. South southwest wind around 6 mph.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 52. West southwest wind around 6 mph.

    High: 52 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. South southwest wind around 7 mph.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 52. South wind 6 to 9 mph.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 43. North northeast wind around 7 mph.
Tonight
Partly cloudy, with a low around 18. Light and variable wind becoming south around 5 mph.
New Year's Day
Isolated showers between 3pm and 4pm. Mostly cloudy, with a high near 44. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 26. South southwest wind around 6 mph.
Friday
Partly sunny, with a high near 52. West southwest wind around 6 mph.
Friday Night
Partly cloudy, with a low around 25. South southwest wind around 7 mph.
Saturday
Mostly sunny, with a high near 52. South wind 6 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 28.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Mostly cloudy, with a low around 27.
Monday
Partly sunny, with a high near 52.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
2:32 pm MST Dec 31, 2025
3pm MST Dec 31, 2025-6pm MST Jan 6, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database