Philadelphia is getting one more mostly manageable summer day Wednesday, with partly cloudy skies early, a sunny afternoon and temperatures climbing toward 89 degrees. The forecast takes a sharper turn Thursday, when showers and thunderstorms are expected to move in after 9 a.m. and potentially dump heavy rain across the city.
Sunny Wednesday Gives Way To Thursday Storms
Wednesday’s northwest winds should stay light, generally between 0 and 10 mph, while humidity eases compared with recent muggy stretches. Partly cloudy skies return Wednesday night, with temperatures dipping to around 71 degrees and little chance of rain, according to the National Weather Service.
Thursday is the week’s main weather concern. The forecast calls for a high near 84, an 80% chance of showers and thunderstorms, and between a half-inch and three-quarters of an inch of rain possible, with the heaviest downpours creating a risk for ponding and flash flooding.
Heavy Rain Risk Builds Along I-95
The National Weather Service discussion places the I-95 corridor, including Philadelphia, in a slight risk for excessive rainfall. A marginal severe-weather risk also stretches south from the I-78 corridor, with damaging wind gusts possible if stronger storm lines develop.
That makes Thursday afternoon and evening a poor bet for long outdoor plans, especially in areas prone to poor drainage. The setup is a more substantial update from the quieter summer pattern described in Hoodline’s earlier Philly forecast.
Unsettled Weekend, Calmer Start Next Week
Friday should be mostly sunny with a high near 85, though a slight chance of showers arrives after 2 p.m. Rain and thunderstorm chances rise Friday night, then continue Saturday with mostly cloudy skies, a high near 83 and a 50% chance of precipitation.
Sunday stays partly sunny and warm near 86, but showers and thunderstorms remain possible. Conditions look calmer Monday, with sunny skies and a high near 85, followed by a slight chance of showers Tuesday.
No watches, warnings or advisories are listed for Pennsylvania, New Jersey, Delaware or Maryland in the current forecast report. Even so, anyone with Thursday plans should keep an eye on updated forecasts and have an indoor backup ready before the storms arrive.
