Mount Vernon Maryland Climate Data

Monthly Average Climate Data for Mount Vernon Maryland

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-1.8 °C7.8 °C85.85 mm
February-1.3 °C9.1 °C74.42 mm
March2.3 °C13.2 °C104.14 mm
April7.8 °C19.7 °C88.9 mm
May13.2 °C24.2 °C92.71 mm
June18.4 °C28.9 °C103.38 mm
July21.2 °C31.3 °C112.01 mm
August20.3 °C30.2 °C124.21 mm
September16.9 °C27.2 °C109.98 mm
October10.7 °C21.5 °C103.12 mm
November4.6 °C15.2 °C80.01 mm
December0.6 °C10.1 °C93.47 mm
Annual9.4 °C19.9 °C1172.2 mm

Climate Data for Mount Vernon Maryland

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7b : -15°C to -12.2°C
Plant Hardiness Zone - 2012Zone 7b : -15°C to -12.2°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate