National Maryland Climate Data

Monthly Average Climate Data for National Maryland

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.2 °F35.5 °F3.1 in.
February21.3 °F38.9 °F2.93 in.
March27.9 °F47.6 °F3.94 in.
April37.9 °F61.9 °F4.01 in.
May47.9 °F70.5 °F4.8 in.
June56.3 °F78.1 °F4.57 in.
July60.4 °F82.1 °F3.76 in.
August58.8 °F80.8 °F3.42 in.
September52.2 °F74.5 °F3.91 in.
October41.5 °F62.9 °F3.28 in.
November32.0 °F50.0 °F3.02 in.
December24.9 °F39.7 °F3.38 in.
Annual40.1 °F60.2 °F44.12 in.

Climate Data for National Maryland

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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