Lake Mary Ronan Montana Climate Data

Monthly Average Climate Data for Lake Mary Ronan Montana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.6 °F32.2 °F1.54 in.
February15.9 °F35.6 °F1.22 in.
March21.2 °F44.9 °F1.28 in.
April27.4 °F52.7 °F1.61 in.
May34.9 °F62.6 °F1.9 in.
June41.2 °F69.3 °F2.77 in.
July47.2 °F80.8 °F1.12 in.
August46.3 °F80.4 °F0.94 in.
September39.0 °F69.1 °F1.28 in.
October29.6 °F53.2 °F1.59 in.
November22.1 °F39.9 °F1.64 in.
December16.5 °F31.0 °F1.58 in.
Annual29.7 °F54.3 °F18.47 in.

Climate Data for Lake Mary Ronan 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 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year