Cascadia Oregon Climate Data

Monthly Average Climate Data for Cascadia Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January0.8 °C7.6 °C205.23 mm
February1 °C9.8 °C161.8 mm
March2 °C12.3 °C179.32 mm
April3.6 °C14.7 °C171.2 mm
May6.5 °C18.4 °C117.35 mm
June8.8 °C21.5 °C79.25 mm
July10.8 °C26.2 °C16.26 mm
August10.3 °C26.6 °C20.83 mm
September8.1 °C23.4 °C59.44 mm
October5.3 °C16.8 °C136.14 mm
November2.7 °C10.6 °C232.16 mm
December0.8 °C6.9 °C244.09 mm
Annual5.1 °C16.2 °C1623.07 mm

Climate Data for Cascadia Oregon

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 8b : -9.4°C to -6.7°C
Plant Hardiness Zone - 2012Zone 8b : -9.4°C to -6.7°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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