Harlowton Montana Climate Data

Monthly Average Climate Data for Harlowton Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.8 °F36.5 °F0.32 in.
February15.0 °F38.7 °F0.38 in.
March21.8 °F47.2 °F0.57 in.
April28.9 °F55.2 °F1.57 in.
May37.5 °F64.2 °F2.56 in.
June45.6 °F73.2 °F2.76 in.
July51.2 °F84.0 °F1.53 in.
August49.2 °F83.0 °F1.2 in.
September41.2 °F72.6 °F1.17 in.
October31.2 °F58.4 °F0.83 in.
November22.2 °F44.9 °F0.49 in.
December15.7 °F36.2 °F0.46 in.
Annual31.2 °F57.8 °F13.84 in.

Climate Data for Harlowton Montana

Average First Frost DateSep.11 - Sep. 20
Average Last Frost DateJun. 11 - Jun. 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4b : -25°F to -20°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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