La Grande Oregon Climate Data

Monthly Average Climate Data for La Grande Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.2 °C3.5 °C47.5 mm
February-3.3 °C6.1 °C31.75 mm
March-1.3 °C10.8 °C43.18 mm
April0.9 °C14.6 °C46.23 mm
May4.6 °C19.7 °C53.34 mm
June7.5 °C23.7 °C38.1 mm
July10.1 °C30.2 °C12.45 mm
August9.4 °C30.4 °C16 mm
September5.6 °C25.2 °C15.75 mm
October1.2 °C16.9 °C35.56 mm
November-1.6 °C8.4 °C55.37 mm
December-4.4 °C3.3 °C60.71 mm
Annual2 °C16.1 °C455.94 mm

Climate Data for La Grande Oregon

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer
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