Brockton Montana Climate Data

Monthly Average Climate Data for Brockton Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January1.8 °F23.4 °F0.32 in.
February5.6 °F28.8 °F0.28 in.
March17.5 °F41.8 °F0.51 in.
April29.1 °F57.4 °F1.03 in.
May40.0 °F68.8 °F2.22 in.
June50.5 °F77.7 °F2.96 in.
July55.3 °F85.7 °F2.56 in.
August53.1 °F85.7 °F1.47 in.
September42.9 °F74.9 °F1.23 in.
October30.4 °F58.1 °F0.86 in.
November17.3 °F40.5 °F0.45 in.
December6.2 °F27.7 °F0.37 in.
Annual29.1 °F55.9 °F14.26 in.

Climate Data for Brockton Montana

Average First Frost DateSep.11 - Sep. 20
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4a : -30°F to -25°F
Plant Hardiness Zone - 2012Zone 3b : -35°F to -30°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate