National Maryland Climate Data

Monthly Average Climate Data for National Maryland

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.6 °C1.9 °C78.74 mm
February-5.9 °C3.8 °C74.42 mm
March-2.3 °C8.7 °C100.08 mm
April3.3 °C16.6 °C101.85 mm
May8.8 °C21.4 °C121.92 mm
June13.5 °C25.6 °C116.08 mm
July15.8 °C27.8 °C95.5 mm
August14.9 °C27.1 °C86.87 mm
September11.2 °C23.6 °C99.31 mm
October5.3 °C17.2 °C83.31 mm
November0 °C10 °C76.71 mm
December-3.9 °C4.3 °C85.85 mm
Annual4.5 °C15.7 °C1120.64 mm

Climate Data for National Maryland

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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