Joliet Montana Climate Data

Monthly Average Climate Data for Joliet Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.8 °F37.2 °F0.56 in.
February15.6 °F40.2 °F0.59 in.
March23.3 °F50.5 °F0.87 in.
April30.6 °F58.1 °F1.83 in.
May39.7 °F67.3 °F2.7 in.
June47.7 °F76.9 °F2.16 in.
July53.5 °F87.0 °F0.98 in.
August51.2 °F85.9 °F0.84 in.
September42.7 °F75.3 °F1.28 in.
October31.9 °F60.2 °F1.59 in.
November22.5 °F47.0 °F0.68 in.
December14.1 °F37.1 °F0.58 in.
Annual32.2 °F60.2 °F14.66 in.

Climate Data for Joliet 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 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 4b : -25°F to -20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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