September · United States
Best time to visit Detroit in September Weather, crowds & prices
Weather in Detroit in September
Average temperature 19°C, 40 mm of rain, about 13 days with 6+ hours of sunshine and 74% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.8/10
Ranked #2 of 12 months
- Avg temp
- 19°C
- Rainfall
- 40 mm
- Humidity
- 74%
- Days with 6h+ sun
- 13
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Detroit scores 8.8/10 for sightseeing and cultural travel - one of the top 12-month picks (#2). Expect around 19°C, 40 mm of rain, and roughly 13 days with 6+ hours of sunshine this month.
Detroit's Motown history, art deco towers and riverfront tell the story of American industry.
September in Detroit — one of the year's strongest windows (2nd)
Temperatures hover around 19°C (66°F) — the kind of month where neither heat nor cold forces the schedule.
With around 40 mm of rain, any showers tend to pass through rather than settle in; about 13 days with 6+ hours of sunshine and 12.3 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Detroit at 8.8/10 (2nd of 12), just behind May at 8.9/10.
Pack layers you can shed by midday plus one warm layer for the evening.
Budget for peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Detroit in September?
- In September, Detroit averages 19°C, 40 mm of rain, and about 13 days with 6+ hours of sunshine. Its climate-comfort score is 8.8/10.
- Is September a good time to visit Detroit?
- September earns a 8.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Detroit in September?
- Expect about 40 mm of rain in September. Average humidity is 74% and there are about 13 days with 6+ hours of sunshine.
Curated in Detroit
Tickets & experiences
Things to do in Detroit
Detroit, United States. Live activities and tours from GetYourGuide, matched to this destination.