Great Falls
WinterOff season ~42°F highs
Things to do in Great Falls in December
December is off season (quieter, and often cheaper) to visit Great Falls, with average highs around 42°F. Museums and indoor sights come into their own, with fewer crowds outside.
Best picks for December
What's famous here, weighted toward what shines in December.
Holidays in December 2026
- Christmas Day · Fri, Dec 25
Expect busier roads and pricier stays around these dates. See long weekends.
Great Falls in December: quick answers
Is December a good time to visit Great Falls?
December is off season (quieter, and often cheaper) to visit Great Falls, with average highs around 42°F. Museums and indoor sights come into their own, with fewer crowds outside.
What is the weather like in Great Falls in December?
Average daytime highs are around 42°F, compared with 81°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 Great Falls in December?
Top picks for December: C. M. Russell Museum, Paris Gibson Square Museum of Art, Great Plains Dinosaur Museum, Black Eagle Dam, Rainbow Dam.
