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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

57°F

14°C

Humidity 58%
Wind Speed WSW 9 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 18 Aug 05:20 AM MDT
Extended Forecast for

Riverton WY

  • Today

    Today: Sunny, with a high near 92. West wind around 6 mph becoming calm.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. South wind around 6 mph becoming east southeast in the evening.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Calm wind becoming east southeast 5 to 7 mph in the afternoon.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55. East southeast wind 5 to 7 mph becoming southwest after midnight.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60. North northwest wind 6 to 9 mph becoming west southwest after midnight.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 94. West wind 5 to 8 mph becoming northeast in the afternoon.

    High: 94 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 92. West wind around 6 mph becoming calm.
Tonight
Mostly clear, with a low around 54. South wind around 6 mph becoming east southeast in the evening.
Tuesday
Sunny and hot, with a high near 97. Calm wind becoming east southeast 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 55. East southeast wind 5 to 7 mph becoming southwest after midnight.
Wednesday
Sunny and hot, with a high near 99. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 60. North northwest wind 6 to 9 mph becoming west southwest after midnight.
Thursday
Mostly sunny, with a high near 94. West wind 5 to 8 mph becoming northeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Sunny, with a high near 88.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Sunny, with a high near 87.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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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:
12:42 am MDT Aug 18, 2025
Forecast Valid:
5am MDT Aug 18, 2025-6pm MDT Aug 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