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

Showers and Thunderstorms in the Southwest and Ohio Valley; Mountain Snow in the Northeast

Showers and thunderstorms, along with high-elevation snow, will begin to develop over parts of the Southwest late tonight and is expected to continue through Wednesday morning. Mountain snow over parts the Northeast will continue through Tuesday. A few strong to severe storms and heavy rainfall are possible across portions of the Lower Ohio Valley Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Riverton Regional Airport (KRIW)

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

Overcast

45°F

7°C

Humidity 75%
Wind Speed W 12 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 17 Nov 11:05 PM MST
Extended Forecast for

Riverton WY

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. Southwest wind around 6 mph.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 54. South wind around 6 mph becoming light and variable.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 28. South southwest wind 5 to 7 mph.

    Low: 28 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 53. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 53 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 25. West northwest wind around 5 mph becoming light and variable after midnight.

    Low: 25 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 48. Light and variable wind.

    High: 48 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25. Light and variable wind.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 31. Southwest wind around 6 mph.
Tuesday
Partly sunny, with a high near 54. South wind around 6 mph becoming light and variable.
Tuesday Night
Partly cloudy, with a low around 28. South southwest wind 5 to 7 mph.
Wednesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 53. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 25. West northwest wind around 5 mph becoming light and variable after midnight.
Thursday
Mostly sunny, with a high near 48. Light and variable wind.
Thursday Night
Partly cloudy, with a low around 25. Light and variable wind.
Friday
Mostly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Mostly clear, with a low around 23.
Sunday
Mostly sunny, with a high near 49.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Isolated showers. Mostly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
Last Update:
10:47 pm MST Nov 17, 2025
Forecast Valid:
11pm MST Nov 17, 2025-6pm MST Nov 24, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation