Casper Mountain Wyoming Climate Data

Monthly Average Climate Data for Casper Mountain Wyoming

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.1 °F26.4 °F1.74 in.
February12.2 °F28.1 °F1.98 in.
March18.8 °F37.6 °F2.59 in.
April24.0 °F45.2 °F3.5 in.
May33.1 °F54.9 °F4.15 in.
June42.5 °F67.1 °F2.14 in.
July50.7 °F76.7 °F1.01 in.
August49.8 °F75.2 °F0.94 in.
September41.3 °F64.8 °F1.76 in.
October29.6 °F49.9 °F2.68 in.
November20.0 °F35.6 °F1.79 in.
December12.3 °F26.1 °F1.97 in.
Annual28.9 °F49 °F26.25 in.

Climate Data for Casper Mountain Wyoming

Average First Frost DateSep.11 - Sep. 20
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 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year