Altamont Oregon Climate Data

Monthly Average Climate Data for Altamont Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.8 °C4.9 °C50.04 mm
February-4.6 °C7.3 °C35.81 mm
March-2.9 °C10.3 °C33.53 mm
April-1.3 °C13.6 °C27.94 mm
May2.3 °C18.8 °C28.96 mm
June5.1 °C23.5 °C16.76 mm
July8.4 °C29.2 °C6.35 mm
August7.4 °C28.7 °C8.89 mm
September3.6 °C24.9 °C9.65 mm
October-0.9 °C17.6 °C22.1 mm
November-3.8 °C9.2 °C39.88 mm
December-6.3 °C4.2 °C60.45 mm
Annual0.1 °C16 °C340.36 mm

Climate Data for Altamont 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 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer