Rochester Washington Climate Data

Monthly Average Climate Data for Rochester Washington

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.5 °C8.3 °C206.5 mm
February1.2 °C10.1 °C140.72 mm
March2.2 °C12.6 °C158.24 mm
April3.7 °C15.3 °C108.46 mm
May6.7 °C19.2 °C65.79 mm
June9.1 °C21.6 °C46.74 mm
July11.1 °C25.2 °C15.49 mm
August11.1 °C25.7 °C25.91 mm
September8.8 °C22.7 °C51.31 mm
October5.6 °C16.2 °C148.08 mm
November2.8 °C10.9 °C256.54 mm
December1.3 °C7.7 °C224.28 mm
Annual5.4 °C16.3 °C1448.06 mm

Climate Data for Rochester Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost50-75 Days
Plant Hardiness Zone - 2023Zone 8b : -9.4°C to -6.7°C
Plant Hardiness Zone - 2012Zone 8a : -12.2°C to -9.4°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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