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Excessive Heat in Delaware, Pennsylvania
Excessive Heat June 11, 2026 – June 12, 2026 · Delaware, Pennsylvania
What the National Weather Service wrote
The heat index at Philadelphia International Airport reached 105 degrees on June 11th and 106 degrees on June 12th.
The wider storm
A strong southwesterly flow ahead of a cold front brought hot humid air northward into the region. The front's passage heralded the end of the heat.
Source: NOAA Storm Events Database, event 1341195. Narratives are written by the National Weather Service forecast office that issued the report.
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