August in Ann Arbor averages a daily high of 27.8°C with nights around 14.6°C. Expect roughly 10.7 wet days totalling 92.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Ann Arbor is May–June.
Based on ANN ARBOR SE, MI US (5.6km), 1995–2024. 22 years of August data.