O'Brien Oregon Climate Data

Monthly Average Climate Data for O'Brien Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January31.9 °F48.9 °F11.47 in.
February32.4 °F54.4 °F9.53 in.
March33.8 °F58.9 °F9.94 in.
April36.6 °F64.5 °F6.13 in.
May41.8 °F73.4 °F2.67 in.
June46.2 °F81.4 °F0.96 in.
July50.7 °F91.7 °F0.2 in.
August49.1 °F91.2 °F0.21 in.
September44.5 °F84.5 °F0.98 in.
October38.4 °F70.9 °F4.82 in.
November35.4 °F54.8 °F10.04 in.
December32.3 °F47.1 °F14.42 in.
Annual39.4 °F68.5 °F71.37 in.

Climate Data for O'Brien Oregon

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost75-100 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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