FallPeak season ~79°F highs

Things to do in Philadelphia in September

September is one of the best months to visit Philadelphia, with average highs around 79°F. Crisp air and changing leaves make parks and viewpoints shine.

Plan a September weekend Where else in September

Best picks for September

What's famous here, weighted toward what shines in September.

Liberty Bell

bell in Philadelphia, Pennsylvania, USA that serves as a symbol of American independence and liberty

Independence Hall

historic building in Philadelphia, Pennsylvania, USA

Philadelphia Museum of Art

art museum in Philadelphia, Pennsylvania

Holidays in September 2027

Labour Day · Mon, Sep 6

Expect busier roads and pricier stays around these dates. See long weekends.

Also great in September in Pennsylvania

Pittsburgh Lancaster Erie Scranton Allentown

Philadelphia in September: quick answers

Is September a good time to visit Philadelphia?

September is one of the best months to visit Philadelphia, with average highs around 79°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Philadelphia in September?

Average daytime highs are around 79°F, compared with 88°F in the warmest month. Check the forecast a week out; our planner favors indoor stops on rainy days.

What are the best things to do in Philadelphia in September?

Top picks for September: Liberty Bell, Independence Hall, Philadelphia Museum of Art, Second Bank of the United States, Edgar Allan Poe National Historic Site.