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Detroit weather in September 2025
Expect 23°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Detroit in September. Check more long-term weather averages for Detroit in September before you book your next holiday to Michigan in 2025/2026.
- 2323°C max day temperature
- 7 hours of sunshine per day
- 1010 days with some rainfall
- 1313°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 7373 mm of monthly rainfall
- 66 (High) UV index
- 2020°C sea temperature
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Recommended for Michigan
The September weather guide for Michigan (Detroit) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Detroit in September?
Daytime temperatures usually reach 23°C in Detroit in September, falling to 13°C at night.
How sunny is it in Detroit in September?
There are normally 7 hours of bright sunshine each day in Detroit in September - that's 54% of daylight hours.
How warm is the sea around Detroit in September?
The average sea temperature around Detroit in September is 20°C.
Does it rain in Detroit in September?
There are usually 10 days with some rain in Detroit in September and the average monthly rainfall is 73mm.
Detroit September sunrise & sunset times
Browse the sunrise and sunset times for Detroit in September 2025. Select a month to view Detroit sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:58 | 19:06 |
Monday, 15th September 2025 | 06:12 | 18:41 |
Tuesday, 30th September 2025 | 06:29 | 18:15 |
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