Philadelphia is waking up to a mellow start on Sunday, July 26, with partly cloudy skies and temperatures hovering around 66F in the city. The afternoon looks warm and summer-classic, with a high near 87F. The quiet stretch will not last long, though, as scattered showers and thunderstorms move in Monday, July 27, and a more widespread, potentially heavy and flooding-producing round targets Tuesday, July 28, 2026.
Sunny Sunday
Sunshine should dominate Sunday, July 26, with light east winds around 0 to 5 mph and only a sliver of rain chance through the afternoon. It is a solid window for outdoor plans before humidity ramps up and storm chances increase Monday.
Monday Into Tuesday
Expect scattered, mostly afternoon storms Monday, July 27, with a marginal risk for stronger cells and roughly a 50% chance of precipitation across the metro. By Tuesday, July 28, conditions turn notably more humid and unsettled, with showers and thunderstorms likely and some storms capable of dropping heavy, training rainfall that raises the potential for flash flooding. Local forecasters are watching the setup closely, according to the National Weather Service.
Beaches And Boaters
Today’s northeast swell and 23-foot breaking waves bring a moderate rip-current risk at area beaches Sunday. Surf should run lower on Monday, but conditions could change as southerly winds pick up later in the week. Boaters should note that small-craft advisory conditions are possible by Tuesday as southerly flow strengthens and thunderstorms move through.
How To Prepare
Charge phones and portable batteries, secure outdoor furniture, and move cars off low-lying streets that flood quickly. If a flash-flood or severe thunderstorm warning is issued, seek shelter and avoid driving through standing water. For background on the evolving midweek threat, see our earlier coverage Philly on flood watch.
