South Glastonbury Montana Climate Data

Monthly Average Climate Data for South Glastonbury Montana

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.3 °C1.3 °C13.72 mm
February-9.2 °C2.7 °C15.24 mm
March-5.4 °C7.7 °C23.37 mm
April-1.7 °C12.4 °C42.67 mm
May2.6 °C17.4 °C57.15 mm
June6.3 °C22.6 °C61.47 mm
July9.7 °C28.4 °C38.86 mm
August8.7 °C28.2 °C32.26 mm
September5.1 °C22.6 °C32 mm
October-0.1 °C14.2 °C33.02 mm
November-5.3 °C5.9 °C21.59 mm
December-9.4 °C0.8 °C18.54 mm
Annual-0.7 °C13.7 °C389.89 mm

Climate Data for South Glastonbury Montana

Average First Frost DateSep.1 - Sep. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost
Plant Hardiness Zone - 2023Zone 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 4b : -31.7°C to -28.9°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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