Hartline Washington Climate Data

Monthly Average Climate Data for Hartline Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.4 °F34.0 °F1.29 in.
February25.1 °F40.1 °F0.86 in.
March30.3 °F50.4 °F1.0 in.
April34.9 °F60.0 °F0.85 in.
May42.4 °F69.5 °F1.05 in.
June48.2 °F76.7 °F0.83 in.
July55.1 °F87.1 °F0.48 in.
August54.5 °F86.6 °F0.28 in.
September46.8 °F76.7 °F0.27 in.
October36.8 °F60.9 °F0.71 in.
November28.3 °F44.2 °F1.24 in.
December22.7 °F34.0 °F1.43 in.
Annual37.3 °F60 °F10.29 in.

Climate Data for Hartline Washington

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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