Willamina Oregon Climate Data

Monthly Average Climate Data for Willamina Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.8 °C8.3 °C195.33 mm
February1.9 °C10.4 °C146.05 mm
March3.1 °C12.9 °C133.35 mm
April4.4 °C16.1 °C96.27 mm
May7.1 °C20.2 °C53.59 mm
June9.3 °C23.3 °C30.48 mm
July11.3 °C28.2 °C6.6 mm
August11.3 °C28.7 °C8.89 mm
September9.5 °C25.1 °C37.34 mm
October6.4 °C17.8 °C96.27 mm
November3.7 °C11.4 °C187.96 mm
December1.6 °C7.9 °C232.92 mm
Annual6 °C17.5 °C1225.05 mm

Climate Data for Willamina Oregon

Average First Frost DateNov. 11 - Nov. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost40-50 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 ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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