Ketchum Idaho Climate Data

Monthly Average Climate Data for Ketchum Idaho

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January7.6 °F31.6 °F2.32 in.
February10.4 °F35.8 °F1.75 in.
March18.1 °F43.7 °F1.83 in.
April26.1 °F52.8 °F1.2 in.
May33.8 °F62.5 °F1.79 in.
June39.0 °F71.3 °F1.46 in.
July45.4 °F82.7 °F0.46 in.
August43.9 °F81.7 °F0.62 in.
September36.9 °F72.0 °F0.86 in.
October28.0 °F58.1 °F1.43 in.
November17.9 °F42.4 °F1.53 in.
December9.1 °F31.3 °F2.84 in.
Annual26.4 °F55.5 °F18.09 in.

Climate Data for Ketchum Idaho

Average First Frost DateAug. 21 - Aug. 31
Average Last Frost DateJul. 1 - Jul. 10
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer
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