Bynum Montana Climate Data

Monthly Average Climate Data for Bynum Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.3 °F35.2 °F0.41 in.
February14.0 °F36.6 °F0.46 in.
March20.7 °F43.9 °F0.63 in.
April28.7 °F52.7 °F1.47 in.
May37.3 °F62.3 °F2.19 in.
June44.6 °F69.8 °F2.68 in.
July50.2 °F80.4 °F1.1 in.
August48.6 °F79.7 °F1.14 in.
September41.0 °F69.5 °F1.25 in.
October31.2 °F56.4 °F0.87 in.
November22.0 °F43.4 °F0.54 in.
December14.7 °F35.7 °F0.44 in.
Annual30.5 °F55.5 °F13.18 in.

Climate Data for Bynum Montana

Average First Frost DateSep.11 - Sep. 20
Average Last Frost DateJun. 11 - Jun. 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4a : -30°F to -25°F
Plant Hardiness Zone - 2012Zone 4a : -30°F to -25°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
2024 plantmaps.com