Grand Ronde Oregon Climate Data

Monthly Average Climate Data for Grand Ronde Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January1.8 °C8.2 °C258.06 mm
February1.9 °C10.3 °C189.23 mm
March2.9 °C12.7 °C171.96 mm
April4.3 °C15.8 °C128.78 mm
May7 °C19.8 °C68.83 mm
June9.2 °C22.6 °C43.94 mm
July11.1 °C26.8 °C7.11 mm
August11.2 °C27.4 °C10.67 mm
September9.6 °C24.7 °C44.45 mm
October6.5 °C17.7 °C129.03 mm
November3.6 °C11.3 °C245.11 mm
December1.5 °C7.7 °C302.77 mm
Annual5.9 °C17.1 °C1599.94 mm

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 : -9.4°C to -6.7°C
Plant Hardiness Zone - 2012Zone 8b : -9.4°C to -6.7°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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