Heppner Oregon Climate Data

Monthly Average Climate Data for Heppner Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-2.9 °C5.6 °C32 mm
February-2.1 °C7.9 °C27.94 mm
March0.1 °C12 °C35.31 mm
April2.3 °C15.4 °C39.37 mm
May5.8 °C20.2 °C44.2 mm
June8.6 °C24.2 °C35.56 mm
July11.6 °C29.9 °C7.87 mm
August11.3 °C29.7 °C7.11 mm
September7.8 °C24.7 °C10.92 mm
October3.3 °C17.2 °C29.97 mm
November-0.3 °C10 °C35.81 mm
December-3.2 °C5.1 °C32 mm
Annual3.5 °C16.8 °C338.06 mm

Climate Data for Heppner Oregon

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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