Lake Ketchum Washington Climate Data

Monthly Average Climate Data for Lake Ketchum Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.4 °C7.8 °C106.93 mm
February1.3 °C9.1 °C76.71 mm
March2.7 °C11.3 °C96.01 mm
April4.8 °C13.9 °C73.41 mm
May7.5 °C17.4 °C62.23 mm
June9.8 °C19.8 °C41.15 mm
July11.5 °C23.2 °C26.42 mm
August11.6 °C23.7 °C28.19 mm
September9.6 °C20.6 °C48.51 mm
October6.1 °C14.9 °C81.53 mm
November3.2 °C10.2 °C128.52 mm
December1.3 °C7.3 °C110.49 mm
Annual5.9 °C14.9 °C880.1 mm

Climate Data for Lake Ketchum Washington

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost40-50 Days
Plant Hardiness Zone - 2023Zone 8b : -9.4°C to -6.7°C
Plant Hardiness Zone - 2012Zone 8a : -12.2°C to -9.4°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
2024 plantmaps.com