Boulder Wyoming Climate Data

Monthly Average Climate Data for Boulder Wyoming

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January-2.6 °F26.9 °F0.53 in.
February-0.3 °F29.6 °F0.56 in.
March12.2 °F40.0 °F0.56 in.
April21.6 °F50.8 °F0.89 in.
May29.6 °F60.9 °F1.47 in.
June36.7 °F71.1 °F1.25 in.
July41.9 °F80.0 °F0.73 in.
August39.7 °F78.9 °F0.8 in.
September32.0 °F69.7 °F1.04 in.
October22.4 °F55.9 °F0.9 in.
November10.7 °F39.8 °F0.49 in.
December-0.5 °F28.1 °F0.56 in.
Annual20.3 °F52.6 °F9.78 in.

Climate Data for Boulder Wyoming

Average First Frost DateAug. 1 - Aug. 10
Average Last Frost DateJul. 11 - Jul. 20
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 3b : -35°F to -30°F
Plant Hardiness Zone - 2012Zone 3b : -35°F to -30°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfc - Subarctic With Cool Summers And Year Around Rainfall