Mount Vernon Maryland Climate Data

Monthly Average Climate Data for Mount Vernon Maryland

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January28.7 °F46.0 °F3.38 in.
February29.7 °F48.4 °F2.93 in.
March36.2 °F55.8 °F4.1 in.
April46.0 °F67.4 °F3.5 in.
May55.8 °F75.6 °F3.65 in.
June65.1 °F84.0 °F4.07 in.
July70.1 °F88.4 °F4.41 in.
August68.6 °F86.4 °F4.89 in.
September62.5 °F81.0 °F4.33 in.
October51.3 °F70.7 °F4.06 in.
November40.2 °F59.4 °F3.15 in.
December33.0 °F50.2 °F3.68 in.
Annual48.9 °F67.8 °F46.15 in.

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 : 5°F to 10°F
Plant Hardiness Zone - 2012Zone 7b : 5°F to 10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate