Is the zoo open in December during the cold day

Yes

It will be open but you may not get to see a lot of the animals because they will be inside.

Yes. It was snowing when we went, however, many animals were not im their outdoor exhibits.

Zoo, Aquarium, and Botanic Garden Gates open 9 a.m. - 4:30 p.m. daily Park closes at 5 p.m. June-August Saturdays, Sundays and summer holidays (Memorial Day, July 4 & Labor Day). Gates open 9 a.m. - 5:30 p.m. Park closes at 6 p.m Closed: Jan. 1, Thanksgiving, and Dec. 25.