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

Riverton Regional Airport (KRIW)

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

Mostly Cloudy

16°C

61°F

Humidity 36%
Wind Speed NNE 13 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 1°C (34°F)
Visibility 16 km
Last update 09 May 02:00 PM MDT
Extended Forecast for

Riverton WY

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms, mainly before 4pm. Mostly sunny, with a high near 18. Breezy, with a north wind 22 to 27 km/h decreasing to 14 to 19 km/h. Winds could gust as high as 45 km/h.

    High: 18 °C

    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 3. North wind 5 to 14 km/h becoming west after midnight.

    Low: 3 °C

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 25. Calm wind becoming south southeast 5 to 10 km/h in the afternoon.

    High: 25 °C

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 6. South southeast wind around 11 km/h becoming southwest in the evening.

    Low: 6 °C

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 31. Breezy, with a light southwest wind becoming west 29 to 34 km/h in the afternoon. Winds could gust as high as 50 km/h.

    High: 31 °C

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 8. Breezy, with a west wind 24 to 34 km/h becoming northwest 11 to 21 km/h after midnight. Winds could gust as high as 50 km/h.

    Low: 8 °C

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 28. East northeast wind 10 to 14 km/h.

    High: 28 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 9.

    Low: 9 °C

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 32.

    High: 32 °C

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly before 4pm. Mostly sunny, with a high near 18. Breezy, with a north wind 22 to 27 km/h decreasing to 14 to 19 km/h. Winds could gust as high as 45 km/h.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 3. North wind 5 to 14 km/h becoming west after midnight.
Sunday
Sunny, with a high near 25. Calm wind becoming south southeast 5 to 10 km/h in the afternoon.
Sunday Night
Partly cloudy, with a low around 6. South southeast wind around 11 km/h becoming southwest in the evening.
Monday
Mostly sunny, with a high near 31. Breezy, with a light southwest wind becoming west 29 to 34 km/h in the afternoon. Winds could gust as high as 50 km/h.
Monday Night
Mostly clear, with a low around 8. Breezy, with a west wind 24 to 34 km/h becoming northwest 11 to 21 km/h after midnight. Winds could gust as high as 50 km/h.
Tuesday
Sunny, with a high near 28. East northeast wind 10 to 14 km/h.
Tuesday Night
Partly cloudy, with a low around 9.
Wednesday
Sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 11. Breezy.
Thursday
Sunny, with a high near 28.
Thursday Night
Mostly clear, with a low around 8. Breezy.
Friday
Sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.04°N 108.41°W (Elev. 5046 m)
Last Update:
12:32 pm MDT May 9, 2026
Forecast Valid:
2pm MDT May 9, 2026-6pm MDT May 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation