Olney Montana Climate Data

Monthly Average Climate Data for Olney Montana

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.9 °C-0.9 °C56.39 mm
February-9.5 °C2.2 °C37.08 mm
March-6 °C6.9 °C36.32 mm
April-2.6 °C12.3 °C35.56 mm
May1.6 °C17.9 °C54.86 mm
June5.3 °C21.3 °C81.28 mm
July7.2 °C27.3 °C38.35 mm
August5.9 °C27.4 °C24.89 mm
September2 °C21.1 °C32.26 mm
October-2.3 °C12.1 °C38.1 mm
November-5.6 °C3.6 °C50.8 mm
December-9.2 °C-1.3 °C54.1 mm
Annual-1.9 °C12.5 °C539.99 mm

Climate Data for Olney Montana

Average First Frost DateSep.1 - Sep. 10
Average Last Frost DateJun. 1 - Jun. 10
Average Days With FrostOver 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 ConditionsSevere Drought
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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