Gresham Oregon Climate Data

Monthly Average Climate Data for Gresham Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January35.8 °F46.8 °F6.88 in.
February36.3 °F50.5 °F5.01 in.
March38.6 °F55.5 °F5.57 in.
April41.7 °F61.3 °F4.1 in.
May47.1 °F68.7 °F3.27 in.
June51.2 °F73.8 °F2.25 in.
July54.9 °F81.6 °F0.62 in.
August55.2 °F82.3 °F0.64 in.
September51.2 °F75.7 °F1.86 in.
October45.3 °F63.4 °F4.69 in.
November39.6 °F52.5 °F6.96 in.
December35.5 °F46.0 °F7.57 in.
Annual44.4 °F63.2 °F49.42 in.

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 : 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