May in Flint averages a daily high of 21.1°C with nights around 8.2°C. Expect roughly 12.2 wet days totalling 94.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Flint is May–September.
Based on FLINT FCWOS, MI US (7.2km), 1995–2024. 30 years of May data.