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Delaware Heat Waves
June 2025: Nearly the entire state was engulfed in Extreme-level heat (purple color). Wilmington and Dover reached 104 degrees, while Georgetown reached 110 degrees.
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Delaware and the Surrounding Areas
This is the same June 2025 heatwave. Nearly every city in the surrounding area reached three-digit temperatures.
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Frequency of Heat-Related Emergency Department Visits by Zip Code
Despite its small area, Wilmington's 19805 area code sees the most heat-related emergency department visits.
Source: DHSS
Percentage of Heat-Related Emergency Department Visits by Location
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