Charlton Maryland Climate Data

Monthly Average Climate Data for Charlton Maryland

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5 °C4.9 °C74.68 mm
February-4.3 °C6.8 °C59.69 mm
March-0.4 °C11.6 °C90.93 mm
April5.2 °C18.4 °C91.69 mm
May10.5 °C23.3 °C109.73 mm
June15.4 °C28.2 °C106.43 mm
July17.9 °C30.7 °C93.47 mm
August17 °C29.7 °C95 mm
September13.1 °C25.9 °C102.62 mm
October6.6 °C19.3 °C87.63 mm
November1.2 °C12.9 °C73.91 mm
December-2.8 °C6.9 °C85.09 mm
Annual6.2 °C18.2 °C1070.87 mm

Climate Data for Charlton Maryland

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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