Riverton Average Temperature by Month

This page shows the average temperature in each month of the year in Riverton, Wyoming. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Riverton?
In Riverton, Wyoming, the warmest month is July, with an average daily high temperature of 89.4 °F and an average low of 54.8 °F.
What's the Coldest Month in Riverton?
In Riverton, Wyoming, the coolest month is January, with an average daily high temperature of 29.6 °F and an average low of 4.5 °F.
Month Avg. High Avg. Low
January 29.6 °F 4.5 °F
February 36.4 °F 8.9 °F
March 50.3 °F 22.2 °F
April 59.2 °F 30.3 °F
May 68.6 °F 40.1 °F
June 80.2 °F 48.3 °F
July 89.4 °F 54.8 °F
August 87.0 °F 52.1 °F
September 75.6 °F 42.6 °F
October 60.5 °F 30.2 °F
November 44.0 °F 17.5 °F
December 30.8 °F 4.9 °F
Year 59.5 °F 29.5 °F
Weather Station Details
Years Station Coordinates
1907–2024 Riverton location
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