October in Ann Arbor averages a daily high of 17.1°C with nights around 4.4°C. Expect roughly 13.5 wet days totalling 70.1mm. Generally workable, with some weather to plan around.
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 October data.