Germantown Maryland Climate Data

Monthly Average Climate Data for Germantown Maryland

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.9 °C5.3 °C78.49 mm
February-2.9 °C7.1 °C69.85 mm
March0.7 °C11.8 °C101.35 mm
April6.3 °C18.6 °C87.63 mm
May11.7 °C23.3 °C115.82 mm
June16.6 °C27.9 °C119.13 mm
July19.3 °C30.3 °C108.2 mm
August18.2 °C29.3 °C92.2 mm
September14.5 °C25.6 °C115.06 mm
October7.9 °C19.2 °C101.35 mm
November2.4 °C13 °C83.57 mm
December-1.4 °C7.4 °C91.95 mm
Annual7.5 °C18.2 °C1164.6 mm

Climate Data for Germantown Maryland

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7b : -15°C to -12.2°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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