WinterOff season ~44°F highs
December is off season (quieter, and often cheaper) to visit Millsboro, with average highs around 44°F. Museums and indoor sights come into their own, with fewer crowds outside.
What's famous here, weighted toward what shines in December.
Expect busier roads and pricier stays around these dates. See long weekends.
December is off season (quieter, and often cheaper) to visit Millsboro, with average highs around 44°F. Museums and indoor sights come into their own, with fewer crowds outside.
Average daytime highs are around 44°F, compared with 85°F in the warmest month. Check the forecast a week out; our planner favors indoor stops on rainy days.
Top picks for December: Indian River Life Saving Station, Zwaanendael Museum, Ross Mansion, Overfalls, Cape Henlopen State Park.