Three Forks Montana Climate Data

Monthly Average Climate Data for Three Forks Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.7 °F34.3 °F0.34 in.
February15.7 °F38.3 °F0.3 in.
March22.5 °F48.0 °F0.63 in.
April29.8 °F56.6 °F1.33 in.
May38.6 °F66.0 °F1.95 in.
June45.4 °F74.6 °F2.39 in.
July50.6 °F85.8 °F1.08 in.
August47.9 °F85.0 °F0.94 in.
September40.4 °F74.1 °F1.02 in.
October30.5 °F59.3 °F0.82 in.
November20.5 °F44.2 °F0.53 in.
December13.2 °F34.1 °F0.4 in.
Annual30.7 °F58.4 °F11.73 in.

Climate Data for Three Forks 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 4b : -25°F to -20°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