Mount Vernon Oregon Climate Data

Monthly Average Climate Data for Mount Vernon Oregon

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.5 °C6.1 °C25.4 mm
February-3.8 °C8.5 °C17.78 mm
March-1.7 °C12.4 °C30.48 mm
April0.6 °C15.8 °C35.81 mm
May4 °C20.8 °C47.5 mm
June7.1 °C25.3 °C33.53 mm
July10 °C31.9 °C11.94 mm
August9.1 °C31.7 °C11.18 mm
September5.3 °C26.7 °C10.92 mm
October1 °C18.6 °C26.67 mm
November-2.3 °C10.1 °C29.97 mm
December-5.1 °C5.2 °C27.94 mm
Annual1.6 °C17.8 °C309.12 mm

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 : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate