December in Bloomington averages a daily high of 5.5°C with nights around -3°C. Expect roughly 11.5 wet days totalling 91.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Bloomington is September–October.
Based on BLOOMINGTON INDIANA UNIVERSITY, IN US (1.1km), 1995–2024. 30 years of December data.