Riverton Wyoming Climate Data

Monthly Average Climate Data for Riverton Wyoming

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-14.3 °C0.4 °C9.4 mm
February-11.8 °C3.2 °C11.18 mm
March-5.3 °C10.3 °C16.26 mm
April-0.8 °C14.8 °C33.53 mm
May4.4 °C20.1 °C53.34 mm
June9 °C26.8 °C27.43 mm
July12.7 °C32.2 °C17.53 mm
August11.3 °C30.8 °C11.43 mm
September6.2 °C24.4 °C19.05 mm
October-0.4 °C15.7 °C23.62 mm
November-7.6 °C7.2 °C9.65 mm
December-13.4 °C0.3 °C7.62 mm
Annual-0.8 °C15.5 °C240.04 mm

Climate Data for Riverton Wyoming

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4b : -31.7°C to -28.9°C
Plant Hardiness Zone - 2012Zone 4a : -34.4°C to -31.7°C
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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