Early autumn · Weather & things to do
Detroit in September
Detroit cools off: highs slip to 75°F (24°C), from 81°F in August, with lows of 55°F (13°C) and about 2.9 in (74 mm) of rain.
At 86/100 for comfort (the top score of the year), it's one of the best months to visit.
- Avg high
- 75°F (24°C)
- Avg low
- 55°F (13°C)
- Rain
- 2.9 in (74 mm)
- Humidity
- 75%
- Cloud cover
- 49%
- Daylight
- ~12 h 16 min
- Comfort score
- 86/100 · Great
What September feels like
Warm afternoons near 75°F (24°C) make long days outdoors easy.
After dark, temperatures fall to about 55°F (13°C).
Showers are part of the month, adding up to about 2.9 in (74 mm).
Plan around September
September is one of Detroit's best months on the climate data.
- Last warm month for a while: October highs fall to 61°F.
- Last of the best-scoring months: by October, the score drops to 79/100.
- Comfort holds steady from August (85 → 86/100).
- September sits inside the May – Sep window our Great Lakes Hidden Gems route recommends.
- Our Frankenmuth & Detroit route is planned for Late Nov – Dec, a window set by the holiday season rather than the weather — September falls outside it.
What to pack for September
- Light, breathable clotheshighs average 75°F
- Packable rain jacket or umbrellaa shower or two is likely
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Detroit in September
With conditions on your side, the picks below favor time outside.
Campus Martius Park
Downtown square with the city's Christmas tree, a skating rink and lit trees, next to the Cadillac Square holiday market.
Why now September scores 86/100 for comfort, good conditions for being outside.
Detroit RiverWalk
Waterfront path from Joe Louis Arena site to Gabriel Richard Park, with views to Windsor.
Why now Highs near 75°F and 2.9 in of monthly rain make this an easy outdoor pick.
Cliff Bell's
Restored 1930s jazz club near Grand Circus Park, with live music most nights and a full dinner menu.
Why now One to do outside while the weather is on your side.
Belle Isle Conservatory
Glass-domed conservatory on Belle Isle with palms, cacti and a seasonal flower show, warm on a cold day.
The Henry Ford
Huge museum of American innovation in Dearborn, with Greenfield Village next door.
Greenfield Village Holiday Nights
Evening walks through The Henry Ford's historic village with carolers, horse-drawn wagons and fireworks.
Nearby in September
- Frankenmuth in September~78 mi · highs 72°F, 2.9 in rain · 2°C (3°F) cooler by day, about as wet
- Cleveland in September~90 mi · highs 73°F, 3.5 in rain · 1°C (2°F) cooler by day, about as wet
- Holland in September~159 mi · highs 70°F, 3.2 in rain · 2°C (4°F) cooler by day, about as wet
- German Village in September~165 mi · highs 79°F, 3.0 in rain · 2°C (4°F) warmer by day, about as wet
These averages also cover Belle Isle and Downtown Detroit.
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Detroit in September: quick answers
Is September a good time to visit Detroit?
Yes. On the climate data it's one of the best months, scoring 86/100. Expect highs of 75°F (24°C) and 2.9 in (74 mm) of rain. September is inside the May – Sep window our Great Lakes Hidden Gems route recommends.
How hot is Detroit in September?
Average highs are 75°F (24°C) and average lows 55°F (13°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Detroit in September?
Some: about 2.9 in (74 mm) of rain falls across September on average, the 6th-wettest month of the year. The annual total is about 33.4 in (848 mm).
What should I pack for Detroit in September?
Bring light, breathable clothes (highs average 75°F), packable rain jacket or umbrella (a shower or two is likely) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Routes in season in September
- Great Lakes Hidden Gems May – Sep
Planning Detroit in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.