Catonsville Maryland Climate Data

Monthly Average Climate Data for Catonsville Maryland

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January25.0 °F42.5 °F3.41 in.
February26.9 °F45.5 °F2.97 in.
March33.4 °F54.1 °F4.32 in.
April43.6 °F66.1 °F3.75 in.
May52.8 °F75.1 °F4.4 in.
June62.0 °F83.4 °F4.42 in.
July67.1 °F87.6 °F4.49 in.
August65.0 °F85.7 °F3.92 in.
September58.4 °F79.0 °F4.71 in.
October46.7 °F67.4 °F4.18 in.
November37.2 °F56.2 °F3.35 in.
December29.9 °F46.3 °F3.98 in.
Annual45.7 °F65.7 °F47.9 in.

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 : 5°F to 10°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationCfa - Humid Subtropical Climate