Mullan Idaho Climate Data

Monthly Average Climate Data for Mullan Idaho

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.2 °F33.9 °F3.92 in.
February22.1 °F37.4 °F3.86 in.
March25.5 °F45.4 °F4.03 in.
April30.9 °F52.6 °F2.91 in.
May37.2 °F63.0 °F2.87 in.
June43.3 °F69.7 °F3.12 in.
July47.5 °F80.2 °F1.06 in.
August46.8 °F80.2 °F1.04 in.
September40.4 °F69.9 °F1.54 in.
October33.0 °F54.1 °F3.48 in.
November26.8 °F40.0 °F4.53 in.
December21.5 °F32.4 °F4.68 in.
Annual33.1 °F54.9 °F37.04 in.

Climate Data for Mullan Idaho

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 11 - Jun. 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer
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