Rainier Oregon Climate Data

Monthly Average Climate Data for Rainier Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January35.7 °F46.6 °F6.62 in.
February35.1 °F50.2 °F4.27 in.
March37.8 °F54.8 °F5.06 in.
April40.9 °F59.1 °F4.22 in.
May46.3 °F65.9 °F2.37 in.
June50.5 °F70.0 °F1.78 in.
July54.3 °F76.5 °F0.44 in.
August54.3 °F77.7 °F0.67 in.
September50.2 °F73.3 °F2.25 in.
October44.2 °F62.0 °F4.3 in.
November39.0 °F52.1 °F6.6 in.
December35.3 °F45.8 °F7.33 in.
Annual43.6 °F61.2 °F45.91 in.

Climate Data for Rainier Oregon

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 11 - May 20
Average Days With Frost50-75 Days
Plant Hardiness Zone - 2023Zone 8b : 15°F to 20°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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