Philadelphia/ Weather & Environment

Philly Sizzles Thursday, Scores Sunny Saturday Before Sunday Storms

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Published on August 13, 2026
Philly Sizzles Thursday, Scores Sunny Saturday Before Sunday StormsSource: Google Street View

Philadelphia is waking up to mostly cloudy skies and temperatures around 75°F Thursday morning, with a brief chance of showers before 7 a.m. The clouds should give way to sunshine, but the city will still climb to near 89°F as west winds pick up through the afternoon.

Thursday Heat Gives Way To A Better Weekend

Friday stays mostly sunny with a high near 88°F, though a slight chance of showers returns Friday night. Saturday looks like the weekend’s cleanest outdoor window, with sunny skies, a high near 88°F and a cooler low around 68°F.

The National Weather Service Mount Holly says conditions should gradually improve as a front moves south, with drier and less humid weather settling in by Saturday. No watches, warnings or advisories are currently posted for Pennsylvania, New Jersey, Delaware, Maryland or nearby marine zones.

Sunday Afternoon Looks Increasingly Unsettled

Sunday morning should remain largely dry, but showers and thunderstorms are likely to develop during the afternoon as temperatures reach about 87°F. The rain chance rises to 60% during the day and 70% Sunday night, when showers and thunderstorms remain likely.

Forecasters are watching for pockets of heavy rain, and the broader region is under a marginal risk for excessive rainfall. Severe-weather and flash-flood details are not yet locked in, but anyone with outdoor plans Sunday afternoon or evening should keep an eye on updated forecasts and be ready to move inside quickly if storms build.

Monday Stays Warm Before Skies Clear

Monday brings another warm day, with partly sunny skies, a high near 89°F and a 30% chance of showers. Tuesday and Wednesday look sunnier, with highs near 88°F and 89°F, respectively.

Spotty Tidal Flooding Possible Thursday Evening

Minor tidal flooding is possible in spots during Thursday evening’s high tide along the tidal Delaware River, Delaware Bay and the Atlantic coast. Beachgoers should see a low rip-current risk Thursday and Friday, with breaking waves generally 2 feet or less, but drivers near the waterfront should avoid any low-lying areas where water begins to collect.