Catonsville Maryland Climate Data

Monthly Average Climate Data for Catonsville Maryland

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.9 °C5.8 °C86.61 mm
February-2.8 °C7.5 °C75.44 mm
March0.8 °C12.3 °C109.73 mm
April6.4 °C18.9 °C95.25 mm
May11.6 °C23.9 °C111.76 mm
June16.7 °C28.6 °C112.27 mm
July19.5 °C30.9 °C114.05 mm
August18.3 °C29.8 °C99.57 mm
September14.7 °C26.1 °C119.63 mm
October8.2 °C19.7 °C106.17 mm
November2.9 °C13.4 °C85.09 mm
December-1.2 °C7.9 °C101.09 mm
Annual7.6 °C18.7 °C1216.66 mm

Climate Data for Catonsville Maryland

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost75-100 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 ClassificationCfa - Humid Subtropical Climate
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