Philadelphia, Pennsylvania – Bright breaks of sunshine are fading behind building clouds, and a more active stretch of summer weather is taking shape across southeastern Pennsylvania. Wet pavement, increasing humidity, and developing thunderstorms could quickly change travel conditions over the next several days, especially from Tuesday into Wednesday when the region faces its highest rain chances.
According to the National Weather Service, scattered showers and thunderstorms will continue to develop through the period, with rain coverage increasing significantly by Tuesday. The official outlook calls for an 80% chance of showers and thunderstorms Tuesday, climbing to a 90% chance Tuesday night, before another 70% chance of rain Wednesday. A Hazardous Weather Outlook also highlights a risk for locally heavy rainfall across parts of the Mid-Atlantic as a strengthening low-pressure system moves through the Northeast.
Plan extra travel time if you’re heading along I-95, I-76, the Schuylkill Expressway, Roosevelt Boulevard, or the Pennsylvania Turnpike. Brief downpours could reduce visibility, while water may collect in low-lying and poor-drainage locations. Philadelphia International Airport could also experience weather-related arrival and departure delays during the busiest travel periods.
Meteorologists are now tracking repeated rounds of thunderstorms that may move across the same areas. That pattern increases the chance for localized flooding despite periods of lighter rain between storms. While widespread severe weather is not expected at this time, a few stronger thunderstorms could produce gusty winds, frequent lightning, and isolated small hail. An isolated tornado cannot be completely ruled out in stronger storm environments, although the current risk remains low.
Keep your phone charged and have multiple ways to receive weather alerts. Never drive through flooded roadways, even if the water appears shallow. Conditions can change quickly once heavier rainfall begins.
Rain chances begin to ease Thursday as partial sunshine returns, followed by warmer and drier weather heading into Friday and next weekend. The Climate Prediction Center’s 6-to-10-day outlook also favors above-normal temperatures across the Mid-Atlantic, signaling another stretch of classic summer warmth after this active storm pattern exits.
Five-Day Forecast for Philadelphia, Pennsylvania
- Today: High 86°F. Showers and thunderstorms become likely during the afternoon. Chance of rain 70%.
- Tonight: Low 69°F. Scattered showers and thunderstorms early, then patchy fog develops. Chance of rain 30%.
- Tuesday: High 82°F. Showers and thunderstorms likely with gusts up to 25 mph. Chance of rain 80%.
- Tuesday Night: Low 68°F. Widespread showers and thunderstorms. Chance of rain 90%.
- Wednesday: High 82°F. Showers likely with afternoon thunderstorms. Chance of rain 70%.
