Green River Wyoming Climate Data

Monthly Average Climate Data for Green River Wyoming

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.0 °F33.7 °F0.6 in.
February11.6 °F37.4 °F0.54 in.
March21.5 °F48.0 °F0.79 in.
April28.0 °F57.1 °F1.18 in.
May36.6 °F66.9 °F1.56 in.
June44.4 °F78.7 °F0.97 in.
July50.9 °F87.3 °F0.51 in.
August49.1 °F85.5 °F0.63 in.
September39.8 °F75.9 °F1.0 in.
October29.3 °F61.4 °F1.05 in.
November19.2 °F45.7 °F0.67 in.
December9.9 °F34.4 °F0.52 in.
Annual29 °F59.3 °F10.02 in.

Climate Data for Green River Wyoming

Average First Frost DateSep.1 - Sep. 10
Average Last Frost DateJun. 21 - Jun. 30
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate