Three Rivers Oregon Climate Data

Monthly Average Climate Data for Three Rivers Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.2 °C4.4 °C65.28 mm
February-5.7 °C6.3 °C45.47 mm
March-4.1 °C9.6 °C36.07 mm
April-2.4 °C13.1 °C31.75 mm
May1 °C17.9 °C35.31 mm
June3.5 °C22.3 °C23.11 mm
July6.3 °C28.5 °C13.72 mm
August5.8 °C28.2 °C13.97 mm
September2.2 °C24.1 °C14.48 mm
October-1.4 °C16.4 °C36.83 mm
November-4 °C8.1 °C55.12 mm
December-6.7 °C3.4 °C78.23 mm
Annual-1 °C15.2 °C449.34 mm

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 : -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 ClassificationDsc - Continental Subarctic - Cold Dry Summer