Simms Montana Climate Data

Monthly Average Climate Data for Simms Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.9 °F36.6 °F0.34 in.
February16.0 °F38.9 °F0.35 in.
March22.4 °F46.8 °F0.56 in.
April30.6 °F55.9 °F1.51 in.
May39.1 °F65.1 °F1.86 in.
June46.6 °F73.0 °F2.54 in.
July51.7 °F83.8 °F1.09 in.
August50.1 °F82.9 °F1.09 in.
September42.7 °F72.5 °F1.18 in.
October33.6 °F58.8 °F0.77 in.
November24.2 °F45.3 °F0.48 in.
December16.4 °F37.0 °F0.42 in.
Annual32.4 °F58.1 °F12.19 in.

Climate Data for Simms 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 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