March in Detroit averages a daily high of 8°C with nights around -1.3°C. Expect roughly 9.7 wet days totalling 53.3mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Detroit is August–September.
Based on DETROIT CITY AIRPORT, MI US (9km), 1995–2024. 29 years of March data.