West Linn Oregon Climate Data

Monthly Average Climate Data for West Linn Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January36.4 °F47.2 °F6.24 in.
February36.9 °F51.2 °F4.35 in.
March39.3 °F56.3 °F4.8 in.
April42.6 °F61.6 °F3.67 in.
May48.0 °F68.9 °F2.42 in.
June52.3 °F74.0 °F1.63 in.
July56.2 °F81.9 °F0.4 in.
August56.3 °F82.4 °F0.58 in.
September52.1 °F76.5 °F1.43 in.
October45.8 °F64.4 °F3.84 in.
November40.4 °F53.1 °F6.56 in.
December36.2 °F46.5 °F7.24 in.
Annual45.2 °F63.7 °F43.16 in.

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 : 20°F to 25°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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