Boneau Montana Climate Data

Monthly Average Climate Data for Boneau Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January9.7 °F31.7 °F0.55 in.
February11.6 °F34.5 °F0.43 in.
March19.7 °F43.8 °F0.51 in.
April29.0 °F54.8 °F1.21 in.
May38.0 °F64.6 °F2.24 in.
June45.8 °F72.7 °F3.32 in.
July51.3 °F83.6 °F1.48 in.
August49.3 °F82.2 °F1.13 in.
September41.2 °F71.1 °F1.34 in.
October30.4 °F56.6 °F0.97 in.
November20.8 °F42.7 °F0.72 in.
December12.6 °F33.4 °F0.44 in.
Annual30 °F56 °F14.34 in.

Climate Data for Boneau Montana

Average First Frost DateSep.11 - Sep. 20
Average Last Frost DateJun. 1 - Jun. 10
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 4a : -30°F to -25°F
Plant Hardiness Zone - 2012Zone 4a : -30°F to -25°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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