Union Gap Washington Climate Data

Monthly Average Climate Data for Union Gap Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.8 °F38.9 °F1.2 in.
February27.1 °F46.8 °F0.78 in.
March31.7 °F56.0 °F0.66 in.
April36.8 °F63.7 °F0.58 in.
May44.7 °F73.1 °F0.83 in.
June50.4 °F79.6 °F0.55 in.
July56.0 °F88.7 °F0.24 in.
August54.6 °F87.8 °F0.2 in.
September46.5 °F79.0 °F0.26 in.
October37.1 °F64.6 °F0.7 in.
November29.0 °F49.1 °F0.89 in.
December24.0 °F38.0 °F1.38 in.
Annual38.6 °F63.8 °F8.27 in.

Climate Data for Union Gap Washington

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°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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