Philadelphia, Pa. – Temperatures will climb near 90 degrees Wednesday across eastern Pennsylvania, New Jersey, and Delaware, with a noticeable spike in humidity that will make conditions feel even hotter. The National Weather Service in Mount Holly says scattered showers and thunderstorms are expected to develop between 4 p.m. and midnight, moving west to east.
According to the weather service, storms could be strong at times, with damaging winds the primary concern. Heavy downpours may cause localized flooding in urban and poor drainage areas, though widespread severe weather is not anticipated. Still, forecasters urge residents to monitor alerts and be ready to move indoors quickly if skies darken.
The warm, muggy setup will begin Tuesday night, with lows staying near 70 degrees—unusually mild for mid-August nights in the region. That moisture will help fuel Wednesday’s storms, especially in areas where daytime heating peaks in the late afternoon.
Residents are advised to avoid flooded roads, secure outdoor items, and check for lightning activity before evening plans. While the most active weather should wind down by midnight, another round of unsettled conditions is possible later this week.
