Ismay Montana Climate Data

Monthly Average Climate Data for Ismay Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January6.4 °F29.3 °F0.44 in.
February10.3 °F33.6 °F0.4 in.
March20.2 °F45.3 °F0.66 in.
April30.6 °F57.5 °F1.65 in.
May41.0 °F67.5 °F2.49 in.
June50.8 °F77.7 °F2.35 in.
July56.7 °F87.6 °F1.97 in.
August54.4 °F86.8 °F1.52 in.
September44.3 °F76.1 °F1.52 in.
October32.3 °F59.6 °F1.1 in.
November19.5 °F44.3 °F0.6 in.
December9.9 °F32.8 °F0.34 in.
Annual31.4 °F58.2 °F15.04 in.

Climate Data for Ismay Montana

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4a : -30°F to -25°F
Plant Hardiness Zone - 2012Zone 4a : -30°F to -25°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate