Wheaton Maryland Climate Data

Monthly Average Climate Data for Wheaton Maryland

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January25.7 °F42.4 °F3.11 in.
February27.0 °F45.6 °F2.76 in.
March33.8 °F54.1 °F3.99 in.
April44.0 °F66.4 °F3.46 in.
May54.0 °F74.5 °F4.44 in.
June62.6 °F82.6 °F4.57 in.
July67.3 °F86.9 °F4.4 in.
August65.7 °F85.0 °F3.69 in.
September59.1 °F78.3 °F4.41 in.
October47.2 °F66.8 °F3.84 in.
November36.8 °F56.2 °F3.16 in.
December30.0 °F46.4 °F3.71 in.
Annual46.1 °F65.4 °F45.54 in.

Climate Data for Wheaton 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
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