Olney Maryland Climate Data

Monthly Average Climate Data for Olney Maryland

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.8 °C5.3 °C81.03 mm
February-3 °C7.1 °C72.14 mm
March0.8 °C11.8 °C103.12 mm
April6.3 °C18.4 °C89.92 mm
May11.8 °C23.1 °C114.3 mm
June16.6 °C27.7 °C114.55 mm
July19.1 °C30.1 °C110.24 mm
August18.2 °C29 °C95 mm
September14.6 °C25.3 °C113.28 mm
October8.1 °C18.9 °C100.08 mm
November2.6 °C13 °C83.06 mm
December-1.4 °C7.5 °C95.25 mm
Annual7.5 °C18.1 °C1171.97 mm

Climate Data for Olney Maryland

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
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 ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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