Mount Vernon Oregon Climate Data

Monthly Average Climate Data for Mount Vernon Oregon

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.9 °F43.0 °F1.0 in.
February25.2 °F47.3 °F0.7 in.
March29.0 °F54.3 °F1.2 in.
April33.0 °F60.4 °F1.41 in.
May39.2 °F69.4 °F1.87 in.
June44.7 °F77.6 °F1.32 in.
July50.0 °F89.5 °F0.47 in.
August48.3 °F89.1 °F0.44 in.
September41.6 °F80.1 °F0.43 in.
October33.8 °F65.5 °F1.05 in.
November27.9 °F50.1 °F1.18 in.
December22.9 °F41.3 °F1.1 in.
Annual35 °F64 °F12.17 in.

Climate Data for Mount Vernon Oregon

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate