Philadelphia, PA – A line of summer thunderstorms is poised to sweep through Philadelphia on Sunday, July 20th, with downpours and gusty winds set to disrupt travel just after 11 a.m. Expect a soggy and stormy start to the week as streets, highways, and powerlines face renewed risk from lightning and heavy rainfall.
According to the National Weather Service, Sunday’s main round of showers and thunderstorms will move into the region late morning and continue through the afternoon. Rainfall could be heavy at times, especially along major corridors like I-76 and I-95. Commuters and residents are urged to monitor for sudden street flooding and be ready for possible power interruptions. Secure outdoor items and charge mobile devices before heading out.
Localized flooding is possible in low-lying and urban areas, and wind gusts may down branches or knock out traffic lights. After Sunday’s storms, skies will gradually clear by Sunday night, leading into a stretch of drier and sunnier weather for the start of the workweek.
Extended Five-Day Forecast for Philadelphia, July 20–25:
- Sunday, July 20: Showers, thunderstorms likely after 11 a.m. High near 90°F. Rain chance: 50%.
- Sunday Night: Showers taper, partly cloudy. Low around 70°F.
- Monday: Sunny and dry. High near 84°F.
- Monday Night: Mostly clear, low around 64°F.
- Tuesday: Sunny, high near 83°F.
- Tuesday Night: Mostly clear, low near 66°F.
- Wednesday: Partly cloudy, high near 86°F.
- Wednesday Night: Partly cloudy, low around 70°F.
- Thursday: Mostly sunny, high near 92°F.
- Thursday Night: Partly cloudy, low around 75°F.
- Friday: Mostly sunny, high near 95°F.
What’s Next:
With strong storms kicking off the week, stay tuned for additional advisories as temperatures climb toward the mid-90s by Friday. Summer heat and sun will dominate after Sunday’s rain, so keep hydrated and monitor for new alerts from the National Weather Service.
