Zillah Washington Climate Data

Monthly Average Climate Data for Zillah Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January25.6 °F39.3 °F1.02 in.
February27.4 °F47.0 °F0.72 in.
March32.2 °F56.2 °F0.6 in.
April37.1 °F63.9 °F0.54 in.
May44.8 °F73.1 °F0.8 in.
June50.5 °F79.4 °F0.66 in.
July55.9 °F88.5 °F0.26 in.
August54.4 °F87.3 °F0.21 in.
September46.7 °F78.6 °F0.21 in.
October37.5 °F64.4 °F0.71 in.
November29.5 °F49.3 °F0.94 in.
December24.8 °F38.2 °F1.14 in.
Annual38.9 °F63.8 °F7.81 in.

Climate Data for Zillah 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 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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