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

Significant Coastal Impacts to the Eastern Seaboard; Tropical Storm Nolo to Impact Hawaii

A Nor'easter will bring significant coastal impacts to the Mid-Atlantic and New England through the weekend. Moderate to major coastal flooding, heavy rain, strong winds and high surf expected. Tropical Storm Nolo will continue to strengthen as it moves north toward the Big Island of Hawaii. Heavy rainfall may bring life-threatening, catastrophic flooding and mudslides through the weekend. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

50°F

10°C

Humidity 81%
Wind Speed WNW 5 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 25 Sep 05:00 AM MDT
Extended Forecast for

Riverton WY

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 79. Light and variable wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 79 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 48. West southwest wind 8 to 13 mph becoming light after midnight.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80. Breezy, with a light south southwest wind becoming west southwest 10 to 15 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 80 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48. West southwest wind 8 to 13 mph becoming light southwest.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 79. Light south southwest wind becoming southwest 9 to 14 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 79 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southwest wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 69. West northwest wind 5 to 7 mph becoming east southeast in the afternoon. Chance of precipitation is 40%.

    High: 69 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.

    Low: 45 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    Showers then
    Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 79. Light and variable wind becoming west southwest 5 to 9 mph in the afternoon.
Tonight
Mostly clear, with a low around 48. West southwest wind 8 to 13 mph becoming light after midnight.
Saturday
Sunny, with a high near 80. Breezy, with a light south southwest wind becoming west southwest 10 to 15 mph in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 48. West southwest wind 8 to 13 mph becoming light southwest.
Sunday
Partly sunny, with a high near 79. Light south southwest wind becoming southwest 9 to 14 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southwest wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Monday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 69. West northwest wind 5 to 7 mph becoming east southeast in the afternoon. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
Tuesday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 72.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
Last Update:
4:31 am MDT Sep 25, 2026
Forecast Valid:
5am MDT Sep 25, 2026-6pm MDT Oct 1, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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