If you're looking for summer vibes, the best time to travel to Ann Arbor is in June, July and August, when the average temperature reaches 23.51 °C, while July, June and September are the 3 sunniest months of the year, with an average of 121.62 hours.
However, if you prefer colder temperatures, make sure you visit Ann Arbor during January, February or March to experience an average of -3.71 °C.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during March, April and January, when the average precipitation in Ann Arbor is 10.5 mm, while the months of January, February and March are drier, with an average of 0 mm.