7-Day Forecast 43.04°N 108.41°W (Text-Only)
NWS Forecast for: Riverton WY
Issued by: National Weather Service Riverton, WY
Last Update: 12:17 am MDT May 20, 2026




Overnight: Clear, with a low around 30. Southwest wind 5 to 8 mph.

Wednesday: Sunny, with a high near 63. Calm wind becoming southwest 5 to 9 mph in the afternoon.

Wednesday Night: Partly cloudy, with a low around 38. West wind 5 to 9 mph becoming calm.

Thursday: A chance of rain and snow showers before 9am, then rain showers. Some thunder is also possible. High near 52. Breezy, with a north wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night: A 40 percent chance of showers before midnight. Mostly cloudy, with a low around 34. Breezy, with a north wind 5 to 15 mph becoming west southwest after midnight. Winds could gust as high as 25 mph.

Friday: Mostly sunny, with a high near 63. West southwest wind around 6 mph becoming calm.

Friday Night: Partly cloudy, with a low around 37. South southeast wind 5 to 8 mph becoming west southwest after midnight.

Saturday: Sunny, with a high near 74.

Saturday Night: Mostly clear, with a low around 42.

Sunday: Sunny, with a high near 81.

Sunday Night: Mostly clear, with a low around 45.

Memorial Day: Sunny, with a high near 85.

Monday Night: Partly cloudy, with a low around 46.

Tuesday: Mostly sunny, with a high near 82. Breezy.



Riverton WY
 43.04°N 108.41°W (Elev. 5046 ft)

Visit your local NWS office at: https://www.weather.gov/riw