Sumpter Oregon Climate Data

Monthly Average Climate Data for Sumpter Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.0 °F35.0 °F2.63 in.
February18.1 °F40.0 °F1.75 in.
March23.1 °F47.0 °F1.92 in.
April27.8 °F53.3 °F1.61 in.
May34.3 °F62.4 °F2.02 in.
June39.4 °F70.2 °F1.42 in.
July44.9 °F82.1 °F0.58 in.
August44.1 °F82.3 °F0.59 in.
September37.4 °F73.1 °F0.63 in.
October29.9 °F58.4 °F1.22 in.
November23.3 °F43.2 °F2.14 in.
December16.3 °F33.9 °F2.91 in.
Annual29.6 °F56.7 °F19.42 in.

Climate Data for Sumpter Oregon

Average First Frost DateSep.11 - Sep. 20
Average Last Frost DateJun. 11 - Jun. 20
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate