Harlem Montana Climate Data

Monthly Average Climate Data for Harlem Montana

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-15.1 °C-2.7 °C10.67 mm
February-13.4 °C-0.1 °C8.89 mm
March-7.4 °C6.5 °C10.67 mm
April-1.2 °C14.3 °C26.67 mm
May4.3 °C19.9 °C50.8 mm
June9.3 °C24.4 °C70.36 mm
July12.3 °C29.8 °C40.39 mm
August11.2 °C29.6 °C24.64 mm
September5.6 °C23.2 °C28.19 mm
October-0.9 °C14.6 °C17.27 mm
November-7.8 °C5.9 °C12.7 mm
December-13.2 °C-0.5 °C8.89 mm
Annual-1.4 °C13.7 °C310.14 mm

Climate Data for Harlem Montana

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 3b : -37.2°C to -34.4°C
Plant Hardiness Zone - 2012Zone 3b : -37.2°C to -34.4°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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