What September feels like in Detroit
For Detroit, September is early autumn on the calendar. Mild afternoons make it easy to spend hours outdoors. There is little difference between day and night: nights stay mild, and evenings feel much like the afternoon. The air is fairly humid, though at these temperatures it rarely feels oppressive.
Rain in Detroit in September
Expect a mix of dry and wet days, with rain about one day in 3. Wet days average about 7.9 mm (0.3 in), enough to soak you without an umbrella. That is close to Detroit's typical rain per wet day for the whole year (about 7.4 mm).
Daylight and sunshine in September
Mid-month, Detroit gets 12 h 33 min of daylight, from sunrise near 7:11 am to sunset near 7:44 pm. Compared with mid-August, the day has lost 1 h 24 min. The sun is out for roughly 77% of those daylight hours, so there are plenty of bright spells.
How September compares to the rest of the year
Ranked by average high, September comes out as the 4th warmest month in Detroit. Afternoons run 3.7°C (6.7°F) cooler than in August, with 12 mm less rain. Temperatures keep falling into October. The next month's average high: 16°C (60.8°F).
Who September suits
- Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
- Parks & outdoor: a good fit — pleasant for gardens, parks and riversides.
Tips for visiting Detroit in September
Rain Protection
A compact umbrella and a light waterproof jacket.
Sunglasses
Frequent sunshine — sunglasses and a light hat.
Quick questions
How warm is Detroit in September?
It feels mild: typical highs are 22.9°C (73.2°F), with lows near 15.1°C (59.2°F).
Does it rain a lot in Detroit in September?
Quite a lot — 71 mm spread over about 9 days.
What should I wear in Detroit in September?
Pack rain protection and sunglasses. There is little need to change for the evening.
Is September or October better for visiting Detroit?
On our 12-month climate ranking, September comes out ahead (#2 of 12 vs #6). October is cooler and has more rainy days.