Philadelphia woke up in a full-on July sauna on Saturday, July 11, 2026, with muggy skies, temperatures in the low 70s (about 73F) and humidity cranking up the early-morning stickiness. That steamy setup will give way to a line of showers and thunderstorms this afternoon, and a Coastal Flood Advisory is waiting in the wings for tonight’s high tide along parts of the Delaware Bay and the South Jersey coast.
Afternoon Storms
Showers and thunderstorms are likely from late morning into the early evening, with coverage peaking roughly between 1 and 8 p.m. Stronger cells could dump quick, heavy rainfall and kick up damaging wind gusts, especially south of Center City, and some spots could see a quarter to a half inch of rain. Scattered travel delays and last-minute changes to outdoor plans are a good bet across the region, according to the National Weather Service Mount Holly.
Tides And The Evening Commute
A Coastal Flood Advisory is posted from about 5 p.m. to 11 p.m. for the South Jersey coast, the Delaware coast and pockets around Delaware Bay, with spotty minor tidal flooding expected along exposed shorelines and riverfront streets. Drivers in low-lying waterfront areas should steer clear of standing water and be ready with alternate routes, as temporary road closures are possible where ponding develops. The advisory comes as a light onshore flow teams up with rising astronomical tides this weekend, so bayfront and tidal roads will need a close eye through tonight.
Weekend Outlook And Midweek Heat
Sunday brings a breather, with conditions drying out under mostly sunny skies and a high near 85F. After that, the heat cranks back up next week, with highs near 91F on Tuesday and potentially around 96F on Wednesday, and heat indices that could flirt with Heat Advisory criteria by midweek. If you have outdoor plans later in the week, consider shifting the heavy lifting to the cooler parts of the day and keep the water bottle handy. For the latest watches and advisories, check the National Weather Service or see our soaked commute breakdown.
