WinterOff season ~37°F highs

Things to do in Allentown in December

December is off season (quieter, and often cheaper) to visit Allentown, with average highs around 37°F. Museums and indoor sights come into their own, with fewer crowds outside.

Plan a December weekend Where else in December

Best picks for December

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

1Indoor escape

Allentown Art Museum

museum in Allentown, Pennsylvania

2Indoor escape

America On Wheels Museum

transportation museum in Allentown, Pennsylvania

Dorney Park

Holidays in December 2026

Christmas Day · Fri, Dec 25

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

What’s on in Allentown in December

Concerts, games and shows in the next few weeks. Tickets open on Ticketmaster.

Wed, Dec 2 · 7:05 PMLehigh Valley Phantoms v Hershey BearsPPL Center Plan a weekend around it

Allentown in December: quick answers

Is December a good time to visit Allentown?

December is off season (quieter, and often cheaper) to visit Allentown, with average highs around 37°F. Museums and indoor sights come into their own, with fewer crowds outside.

What is the weather like in Allentown in December?

Average daytime highs are around 37°F, compared with 87°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 Allentown in December?

Top picks for December: Allentown Art Museum, America On Wheels Museum, Dorney Park, Da Vinci Science Center, Dansbury Depot.