Three Rivers Oregon Climate Data

Monthly Average Climate Data for Three Rivers Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.9 °F40.0 °F2.57 in.
February21.7 °F43.4 °F1.79 in.
March24.6 °F49.3 °F1.42 in.
April27.6 °F55.6 °F1.25 in.
May33.8 °F64.2 °F1.39 in.
June38.3 °F72.2 °F0.91 in.
July43.4 °F83.3 °F0.54 in.
August42.4 °F82.8 °F0.55 in.
September36.0 °F75.4 °F0.57 in.
October29.5 °F61.5 °F1.45 in.
November24.8 °F46.6 °F2.17 in.
December19.9 °F38.1 °F3.08 in.
Annual30.2 °F59.4 °F17.69 in.

Climate Data for Three Rivers Oregon

Average First Frost DateSep.11 - Sep. 20
Average Last Frost DateJun. 21 - Jun. 30
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDsc - Continental Subarctic - Cold Dry Summer