Altamont Oregon Climate Data

Monthly Average Climate Data for Altamont Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.5 °F40.9 °F1.97 in.
February23.7 °F45.1 °F1.41 in.
March26.7 °F50.5 °F1.32 in.
April29.6 °F56.5 °F1.1 in.
May36.1 °F65.9 °F1.14 in.
June41.2 °F74.3 °F0.66 in.
July47.2 °F84.6 °F0.25 in.
August45.3 °F83.7 °F0.35 in.
September38.4 °F76.8 °F0.38 in.
October30.3 °F63.7 °F0.87 in.
November25.1 °F48.6 °F1.57 in.
December20.6 °F39.6 °F2.38 in.
Annual32.1 °F60.9 °F13.4 in.

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 : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer