Tualatin Oregon Climate Data

Monthly Average Climate Data for Tualatin Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January2.3 °C8.6 °C163.32 mm
February2.4 °C10.7 °C125.48 mm
March3.7 °C13.3 °C115.82 mm
April5.6 °C16.3 °C85.34 mm
May8.6 °C20.2 °C59.94 mm
June10.9 °C23.1 °C45.97 mm
July13.1 °C27.6 °C8.13 mm
August13.1 °C27.8 °C10.41 mm
September10.7 °C24.6 °C36.83 mm
October7.2 °C17.8 °C97.28 mm
November4.3 °C11.7 °C163.07 mm
December2.1 °C8.1 °C185.42 mm
Annual7 °C17.5 °C1097.01 mm

Climate Data for Tualatin Oregon

Average First Frost DateNov. 11 - Nov. 20
Average Last Frost DateApr. 1 - Apr. 10
Average Days With Frost30-40 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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