Grand Ronde Oregon Climate Data

Monthly Average Climate Data for Grand Ronde Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January35.3 °F46.7 °F10.16 in.
February35.4 °F50.5 °F7.45 in.
March37.3 °F54.9 °F6.77 in.
April39.7 °F60.4 °F5.07 in.
May44.6 °F67.7 °F2.71 in.
June48.6 °F72.7 °F1.73 in.
July52.0 °F80.3 °F0.28 in.
August52.2 °F81.3 °F0.42 in.
September49.2 °F76.4 °F1.75 in.
October43.7 °F63.9 °F5.08 in.
November38.5 °F52.3 °F9.65 in.
December34.7 °F45.9 °F11.92 in.
Annual42.6 °F62.8 °F62.99 in.

Climate Data for Grand Ronde 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 : 15°F to 20°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate