CWS Forecast: Southeast Pennsylvania (Philadelphia)

Thunderstorms are possible across much of the state on Monday, with severe storms possible in the southeast half of the state. Damaging winds are the most likely threat. Much more pleasant into Tuesday, with mostly sunny skies and seasonably cool conditions, as well as a solid breeze. The pleasant weather for the Commonwealth continues into Wednesday. However, thunderstorm chances are expected to return on Thursday. There are expected to be near-daily thunderstorm chances starting on Thursday and lasting well into the weekend.

Day One: Tuesday, June 23rd, 2026

Partly sunny with a slight breeze. Mostly cloudy overnight, then clear.

High: 66°

Low: 46°F 

Day Two: Wednesday, June 24th, 2026

Sunny during the day with a chance of showers overnight.

High: 66°

Low: 47°

Day Three: Thursday, June 25th, 2026

A chance for rain during the day and night. Otherwise, mostly cloudy.

High: 61°

Low: 45°

Day Four: Friday, June 26th, 2026

Mostly clear skies dominate the entire day.

High: 61°F 

Low: 44°F

Day Five: Saturday, June 27th, 2026

Mostly sunny, then becoming partly cloudy overnight.

High: 70°F

Low: 55°F

Last Updated on April 30, 2026 at 9:55 am