Acton Montana Climate Data

Monthly Average Climate Data for Acton Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.6 °F37.1 °F0.56 in.
February16.6 °F39.5 °F0.55 in.
March23.7 °F48.7 °F0.91 in.
April31.2 °F56.8 °F1.86 in.
May40.3 °F66.1 °F2.67 in.
June48.6 °F75.6 °F2.42 in.
July54.9 °F86.0 °F1.54 in.
August52.9 °F85.2 °F0.96 in.
September44.2 °F74.3 °F1.38 in.
October33.4 °F59.7 °F1.49 in.
November23.6 °F46.6 °F0.6 in.
December16.3 °F37.1 °F0.58 in.
Annual33.4 °F59.4 °F15.52 in.

Climate Data for Acton 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 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
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