September in Southfield averages a daily high of 23.6°C with nights around 11.5°C. Expect roughly 8.6 wet days totalling 80.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Southfield is May–June.
Based on FARMINGTON, MI US (11.6km), 1995–2024. 20 years of September data.