Lake Bosworth Washington Climate Data

Monthly Average Climate Data for Lake Bosworth Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January35.0 °F44.5 °F8.12 in.
February35.2 °F47.4 °F5.25 in.
March37.6 °F51.7 °F5.91 in.
April40.9 °F57.2 °F4.5 in.
May46.3 °F64.2 °F3.16 in.
June50.1 °F68.0 °F3.25 in.
July54.0 °F75.6 °F1.26 in.
August54.6 °F76.5 °F1.18 in.
September50.8 °F70.1 °F2.85 in.
October44.8 °F59.8 °F5.96 in.
November38.4 °F49.2 °F7.55 in.
December34.8 °F43.9 °F6.55 in.
Annual43.5 °F59 °F55.54 in.

Climate Data for Lake Bosworth Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost50-75 Days
Plant Hardiness Zone - 2023Zone 8b : 15°F to 20°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate