Philadelphia, PA – Unseasonably warm overnight temperatures kept much of the Delaware Valley above 60°F into early Wednesday, breaking records before storms arrive later in the day.
According to the National Weather Service in Philadelphia/Mount Holly, at least six records were set or tied Tuesday, including a tied record high of 82°F in Wilmington and multiple record warm low temperatures across the region. Philadelphia only dropped to 62°F overnight, just one degree shy of its warmest March low on record, while Mount Pocono and Reading also recorded unusually mild nighttime lows in the mid to upper 50s.
Daytime highs surged into the low 80s across much of eastern Pennsylvania, New Jersey, and Delaware, including 83°F in Reading and 81°F in Philadelphia. These temperatures sit more than 20 degrees above seasonal averages and have extended the stretch of early spring warmth along major corridors like I-95 and the New Jersey Turnpike.
The warmth will not last. Showers and thunderstorms are expected to develop by mid to late afternoon Wednesday, followed by a sharp cooldown into Thursday with highs dropping into the 40s.
Additional advisories are possible as storms move through later today, marking a rapid shift from record warmth to unsettled conditions.
