Sisters Oregon Climate Data

Monthly Average Climate Data for Sisters Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.8 °C5.7 °C58.67 mm
February-4.6 °C7.7 °C42.16 mm
March-3 °C11 °C28.45 mm
April-1.4 °C14.1 °C23.62 mm
May1.9 °C19.2 °C25.91 mm
June4.4 °C23.3 °C17.78 mm
July7.1 °C29.6 °C7.11 mm
August6.8 °C29.3 °C7.62 mm
September3.4 °C24.8 °C11.18 mm
October-0.4 °C17.1 °C22.61 mm
November-3 °C9.4 °C43.94 mm
December-5.6 °C4.9 °C66.55 mm
Annual0.1 °C16.3 °C355.6 mm

Climate Data for Sisters Oregon

Average First Frost DateAug. 1 - Aug. 10
Average Last Frost DateJul. 1 - Jul. 10
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer
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