Chester Montana Climate Data

Monthly Average Climate Data for Chester Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January7.1 °F30.8 °F0.47 in.
February10.1 °F34.9 °F0.36 in.
March18.8 °F44.1 °F0.45 in.
April29.0 °F56.1 °F0.97 in.
May38.7 °F65.8 °F1.69 in.
June46.8 °F73.6 °F2.62 in.
July52.1 °F83.5 °F1.3 in.
August50.4 °F83.0 °F1.08 in.
September41.5 °F72.1 °F0.9 in.
October29.9 °F57.7 °F0.66 in.
November18.7 °F42.7 °F0.52 in.
December9.7 °F32.8 °F0.45 in.
Annual29.4 °F56.4 °F11.47 in.

Climate Data for Chester 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 3b : -35°F to -30°F
Plant Hardiness Zone - 2012Zone 3b : -35°F to -30°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate