Dewey Beach Delaware Climate Data

Monthly Average Climate Data for Dewey Beach Delaware

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-1.3 °C6.6 °C87.88 mm
February-0.9 °C7.4 °C79.5 mm
March2.7 °C10.6 °C106.68 mm
April7.8 °C16.6 °C87.63 mm
May12.9 °C21.3 °C90.93 mm
June18.4 °C26.3 °C95.5 mm
July21.2 °C29.3 °C117.09 mm
August20.7 °C28.4 °C116.33 mm
September17.8 °C25.4 °C104.9 mm
October11.4 °C19.9 °C113.03 mm
November5.4 °C13.9 °C87.38 mm
December1.2 °C9.3 °C105.41 mm
Annual9.8 °C17.9 °C1192.26 mm

Climate Data for Dewey Beach 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 8a : -12.2°C to -9.4°C
Plant Hardiness Zone - 2012Zone 7b : -15°C to -12.2°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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