West Linn Oregon Climate Data

Monthly Average Climate Data for West Linn Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January2.4 °C8.4 °C158.5 mm
February2.7 °C10.7 °C110.49 mm
March4.1 °C13.5 °C121.92 mm
April5.9 °C16.4 °C93.22 mm
May8.9 °C20.5 °C61.47 mm
June11.3 °C23.3 °C41.4 mm
July13.4 °C27.7 °C10.16 mm
August13.5 °C28 °C14.73 mm
September11.2 °C24.7 °C36.32 mm
October7.7 °C18 °C97.54 mm
November4.7 °C11.7 °C166.62 mm
December2.3 °C8.1 °C183.9 mm
Annual7.3 °C17.6 °C1096.27 mm

Climate Data for West Linn Oregon

Average First Frost DateNov. 11 - Nov. 20
Average Last Frost DateMar. 21 - Mar. 31
Average Days With Frost20-30 Days
Plant Hardiness Zone - 2023Zone 9a : -6.7°C to -3.9°C
Plant Hardiness Zone - 2012Zone 8b : -9.4°C to -6.7°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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