Wilmington Delaware Climate Data

Monthly Average Climate Data for Wilmington Delaware

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.8 °C4.6 °C89.66 mm
February-3.2 °C5.9 °C73.91 mm
March0.7 °C10.3 °C111.25 mm
April6.6 °C17 °C97.54 mm
May11.9 °C22.2 °C96.77 mm
June17.1 °C27.3 °C117.6 mm
July20.2 °C29.8 °C122.43 mm
August19.2 °C28.8 °C110.24 mm
September15.3 °C25.3 °C111 mm
October8.6 °C18.8 °C97.54 mm
November2.9 °C12.7 °C78.49 mm
December-1 °C7.3 °C108.2 mm
Annual7.9 °C17.5 °C1214.63 mm

Climate Data for Wilmington 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 ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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