Gaithersburg Maryland Climate Data

Monthly Average Climate Data for Gaithersburg Maryland

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.7 °C5.4 °C79.5 mm
February-2.8 °C7.2 °C70.1 mm
March0.8 °C11.8 °C101.09 mm
April6.4 °C18.4 °C87.38 mm
May11.8 °C23.1 °C114.3 mm
June16.7 °C27.8 °C116.84 mm
July19.3 °C30.2 °C108.71 mm
August18.3 °C29.2 °C91.95 mm
September14.7 °C25.4 °C113.28 mm
October8.1 °C19.1 °C100.33 mm
November2.7 °C13.1 °C85.09 mm
December-1.3 °C7.6 °C92.46 mm
Annual7.6 °C18.2 °C1161.03 mm

Climate Data for Gaithersburg Maryland

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
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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