Detroit weather in September
September is one of the best months to visit Detroit: highs of 23°C (74°F) and about 74 mm (2.9 in) of rain on average. Nights average 13°C (55°F) and cloud cover 49% (NASA POWER, 2001–2025 averages). It is the 6th wettest month of the year and the 4th warmest. Compared with August, it is cooler and about as wet; October brings highs of 16°C (60°F) and 72 mm (2.8 in) of rain.
Is September a good time to visit Detroit?
best month Weather score 78/100.
Yes. September is one of the best months for weather in Detroit.
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Does it rain a lot in Detroit in September?
Some rain is normal: about 74 mm (2.9 in) falls in an average September. It is the 6th wettest month of the year.
How warm is Detroit in September?
Days average 23°C (74°F) and nights 13°C (55°F).
Detroit weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | -1°C (30°F) | -8°C (17°F) | 52 mm | 77% | least pleasant |
| February | 0°C (32°F) | -8°C (17°F) | 52 mm | 72% | least pleasant |
| March | 6°C (43°F) | -4°C (26°F) | 56 mm | 68% | least pleasant |
| April | 14°C (56°F) | 2°C (35°F) | 77 mm | 64% | fair |
| May | 20°C (68°F) | 8°C (47°F) | 97 mm | 64% | best |
| June | 25°C (77°F) | 14°C (57°F) | 84 mm | 56% | best |
| July | 28°C (82°F) | 17°C (63°F) | 85 mm | 50% | best |
| August | 27°C (81°F) | 17°C (62°F) | 82 mm | 49% | best |
| September | 23°C (74°F) | 13°C (55°F) | 74 mm | 49% | best |
| October | 16°C (60°F) | 6°C (43°F) | 72 mm | 63% | fair |
| November | 8°C (47°F) | 0°C (32°F) | 62 mm | 69% | least pleasant |
| December | 2°C (35°F) | -5°C (24°F) | 55 mm | 79% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
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