Hamilton Montana Climate Data

Monthly Average Climate Data for Hamilton Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.6 °F35.9 °F1.0 in.
February20.5 °F40.6 °F1.07 in.
March25.6 °F49.8 °F0.97 in.
April31.2 °F57.9 °F1.01 in.
May38.0 °F67.2 °F1.56 in.
June44.4 °F74.4 °F1.73 in.
July49.2 °F85.6 °F1.0 in.
August47.5 °F84.4 °F0.86 in.
September40.2 °F74.0 °F0.83 in.
October31.7 °F58.9 °F0.99 in.
November23.9 °F43.4 °F1.45 in.
December18.3 °F34.4 °F1.32 in.
Annual32.4 °F58.9 °F13.79 in.

Climate Data for Hamilton Montana

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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