WinterOff season ~36°F highs

Things to do in Sioux City in December

December is off season (quieter, and often cheaper) to visit Sioux City, with average highs around 36°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

Sergent Floyd River Museum

museum boat in Sioux City, Iowa, United States

2Indoor escape

Hornick Depot

railway station in Hornick, the United States of America

3Indoor escape

Living Heritage Tree Museum

museum in Iowa

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 Sioux City in December

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

Thu, Dec 3 · 7:30 PM#IMOMSOHARD: The Crashing Out Tour!Orpheum Theatre Sioux City Plan a weekend around it

Sioux City in December: quick answers

Is December a good time to visit Sioux City?

December is off season (quieter, and often cheaper) to visit Sioux City, with average highs around 36°F. Museums and indoor sights come into their own, with fewer crowds outside.

What is the weather like in Sioux City in December?

Average daytime highs are around 36°F, compared with 85°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 Sioux City in December?

Top picks for December: Sergent Floyd River Museum, Hornick Depot, Living Heritage Tree Museum, Lewis and Clark State Park, Stone State Park.