Sisters Oregon Climate Data

Monthly Average Climate Data for Sisters Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.3 °F42.3 °F2.31 in.
February23.8 °F45.9 °F1.66 in.
March26.6 °F51.8 °F1.12 in.
April29.4 °F57.4 °F0.93 in.
May35.4 °F66.5 °F1.02 in.
June39.9 °F74.0 °F0.7 in.
July44.8 °F85.2 °F0.28 in.
August44.3 °F84.8 °F0.3 in.
September38.1 °F76.6 °F0.44 in.
October31.3 °F62.7 °F0.89 in.
November26.6 °F48.9 °F1.73 in.
December21.9 °F40.8 °F2.62 in.
Annual32.1 °F61.4 °F14 in.

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 : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer