Harlowton Montana Climate Data

Monthly Average Climate Data for Harlowton Montana

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.6 °C2.5 °C8.13 mm
February-9.4 °C3.7 °C9.65 mm
March-5.7 °C8.4 °C14.48 mm
April-1.7 °C12.9 °C39.88 mm
May3.1 °C17.9 °C65.02 mm
June7.6 °C22.9 °C70.1 mm
July10.7 °C28.9 °C38.86 mm
August9.6 °C28.3 °C30.48 mm
September5.1 °C22.6 °C29.72 mm
October-0.4 °C14.7 °C21.08 mm
November-5.4 °C7.2 °C12.45 mm
December-9.1 °C2.3 °C11.68 mm
Annual-0.4 °C14.4 °C351.53 mm

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 : -31.7°C to -28.9°C
Plant Hardiness Zone - 2012Zone 4b : -31.7°C to -28.9°C
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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