Big Sky Montana Climate Data

Monthly Average Climate Data for Big Sky Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.0 °F28.3 °F2.22 in.
February8.0 °F31.2 °F1.96 in.
March14.2 °F38.8 °F2.08 in.
April21.1 °F46.5 °F2.48 in.
May29.4 °F55.8 °F3.67 in.
June35.3 °F64.6 °F3.66 in.
July40.9 °F75.4 °F1.93 in.
August39.4 °F75.1 °F1.95 in.
September33.5 °F65.4 °F1.88 in.
October24.7 °F51.1 °F2.38 in.
November14.5 °F35.5 °F2.08 in.
December7.1 °F26.9 °F2.52 in.
Annual23 °F49.6 °F28.81 in.

Climate Data for Big Sky Montana

Average First Frost DateAug. 21 - Aug. 31
Average Last Frost DateJun. 11 - Jun. 20
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 4b : -25°F to -20°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year