Hartly Delaware Climate Data

Monthly Average Climate Data for Hartly Delaware

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4 °C6 °C85.34 mm
February-3.4 °C7.1 °C75.95 mm
March0.7 °C11.4 °C104.65 mm
April6.3 °C17.8 °C91.44 mm
May11.7 °C22.8 °C99.82 mm
June16.7 °C27.7 °C114.55 mm
July19.5 °C30.3 °C109.73 mm
August18.4 °C29.3 °C110.74 mm
September14.7 °C26.1 °C106.43 mm
October7.9 °C19.8 °C99.82 mm
November2.3 °C13.7 °C80.01 mm
December-1.3 °C8.4 °C98.81 mm
Annual7.5 °C18.4 °C1177.29 mm

Climate Data for Hartly Delaware

Average First Frost DateNov. 1 - Nov. 10
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 ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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