Gresham Oregon Climate Data

Monthly Average Climate Data for Gresham Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January2.1 °C8.2 °C174.75 mm
February2.4 °C10.3 °C127.25 mm
March3.7 °C13.1 °C141.48 mm
April5.4 °C16.3 °C104.14 mm
May8.4 °C20.4 °C83.06 mm
June10.7 °C23.2 °C57.15 mm
July12.7 °C27.6 °C15.75 mm
August12.9 °C27.9 °C16.26 mm
September10.7 °C24.3 °C47.24 mm
October7.4 °C17.4 °C119.13 mm
November4.2 °C11.4 °C176.78 mm
December1.9 °C7.8 °C192.28 mm
Annual6.9 °C17.3 °C1255.27 mm

Climate Data for Gresham Oregon

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 11 - Apr. 20
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
2024 plantmaps.com