Lake Ketchum Washington Climate Data

Monthly Average Climate Data for Lake Ketchum Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January34.6 °F46.0 °F4.21 in.
February34.3 °F48.4 °F3.02 in.
March36.9 °F52.3 °F3.78 in.
April40.7 °F57.1 °F2.89 in.
May45.5 °F63.4 °F2.45 in.
June49.7 °F67.7 °F1.62 in.
July52.7 °F73.7 °F1.04 in.
August52.9 °F74.6 °F1.11 in.
September49.2 °F69.0 °F1.91 in.
October42.9 °F58.9 °F3.21 in.
November37.8 °F50.4 °F5.06 in.
December34.3 °F45.2 °F4.35 in.
Annual42.6 °F58.9 °F34.65 in.

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 : 15°F to 20°F
Plant Hardiness Zone - 2012Zone 8a : 10°F to 15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate