Rosemont Maryland Climate Data

Monthly Average Climate Data for Rosemont Maryland

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.5 °C5.3 °C76.71 mm
February-3.7 °C7.2 °C60.96 mm
March0.1 °C11.9 °C90.17 mm
April5.6 °C18.7 °C85.6 mm
May11 °C23.5 °C108.46 mm
June15.9 °C28.1 °C99.82 mm
July18.4 °C30.7 °C102.87 mm
August17.3 °C29.7 °C82.04 mm
September13.4 °C25.9 °C112.52 mm
October7.1 °C19.7 °C87.12 mm
November1.6 °C13.3 °C77.72 mm
December-2.3 °C7.4 °C87.12 mm
Annual6.7 °C18.5 °C1071.11 mm

Climate Data for Rosemont Maryland

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