Earliest and Latest Days at or Below 32° F in Riverton

This is a list of the earliest and latest days in a winter season where the low temperature fell to at least 32 °F in Riverton, Wyoming history. It is based on NOAA data from the years 1907–2024.

Earliest freezing temperature in Riverton?

The earliest in a winter season that Riverton, Wyoming has recorded a low temperature of 32 °F or below is July 7 which happened in 1986.

Latest freezing temperature in Riverton?

The latest in a winter season that Riverton, Wyoming has recorded a low temperature of 32 °F or below is June 27 which happened in 1985.

Earliest Days ≤ 32 °F

Date	Year	Temperature
July 7	1986	30 °F
August 7	1912	31 °F
August 27	1992	31 °F
August 29	1989	32 °F
August 30	1964	32 °F
August 31	1993	31 °F
August 31	1962	31 °F
August 31	1956	31 °F
August 31	1932	30 °F
August 31	1908	29 °F
September 3	1974	30 °F
September 3	1964	32 °F
September 3	1961	30 °F
September 4	1984	31 °F
September 6	1989	30 °F
September 6	1956	30 °F
September 6	1943	29 °F
September 6	1929	32 °F
September 7	2010	32 °F
September 7	1989	30 °F
September 7	1956	31 °F
September 7	1929	32 °F

Latest Days ≤ 32 °F

Date	Year	Temperature
June 27	1985	30 °F
June 24	1985	30 °F
June 22	1989	30 °F
June 16	1945	30 °F
June 15	1976	31 °F
June 14	1976	31 °F
June 14	1969	32 °F
June 13	1969	31 °F
June 13	1947	32 °F
June 11	1975	31 °F
June 9	1984	31 °F
June 9	1982	28 °F
June 9	1979	32 °F
June 9	1924	31 °F
June 8	1982	31 °F
June 8	1950	32 °F
June 7	1954	31 °F
June 6	1937	31 °F
June 5	1983	30 °F
June 5	1943	32 °F