Early autumn · Weather & things to do
Door County in September
Door County cools off: highs slip to 69°F (20°C), from 75°F in August, with lows of 56°F (14°C) and about 3.4 in (86 mm) of rain.
At 84/100 for comfort (the top score of the year), it's one of the best months to visit.
- Avg high
- 69°F (20°C)
- Avg low
- 56°F (14°C)
- Rain
- 3.4 in (86 mm)
- Humidity
- 78%
- Cloud cover
- 61%
- Daylight
- ~12 h 18 min
- Comfort score
- 84/100 · Great
What September feels like
Days are mild at around 69°F (20°C): comfortable for walking all day, with a layer for the evening.
After dark, temperatures fall to about 56°F (14°C).
Some rain is likely, about 3.4 in (86 mm) in the month, so pack for a shower or two.
Plan around September
September is one of Door County's best months on the climate data.
- Last of the best-scoring months: by October, the score drops to 65/100.
- Comfort improves from 79/100 in August to 84/100.
- September sits inside the Jun – Sep window our Chicago & Great Lakes route recommends.
What to pack for September
- A warm layer for eveningsnights drop to 56°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 Door County in September
September is good outdoor weather here, so these picks lean toward the open air.
Peninsula State Park
Bluffs, bike trails, Eagle Bluff Lighthouse and the Eagle Tower above Green Bay.
Why now Our curated notes say it's best Sep–Oct for color.
Cave Point County Park
Lake Michigan waves crash into undercut limestone ledges.
Why now September scores 84/100 for comfort, good conditions for being outside.
Al Johnson's Swedish Restaurant
Swedish pancakes with lingonberries under goats grazing on the sod roof.
Pelletier's Restaurant & Fish Boil
Traditional Door County fish boil with the flame-up finale, followed by cherry pie.
Cana Island Lighthouse
1869 lighthouse on an island reached by wading or a hay wagon across the causeway.
Nearby in September
- Sleeping Bear Dunes in September~58 mi · highs 65°F, 3.4 in rain · 2°C (4°F) cooler by day, about as wet
- Traverse City in September~79 mi · highs 68°F, 3.4 in rain · similar daytime temperatures, about as wet
- Mackinac Island in September~138 mi · highs 66°F, 3.6 in rain · 2°C (3°F) cooler by day, about as wet
- Milwaukee in September~140 mi · highs 74°F, 3.5 in rain · 3°C (5°F) warmer by day, about as wet
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.
Door County in September: quick answers
Is September a good time to visit Door County?
Yes. On the climate data it's one of the best months, scoring 84/100. Expect highs of 69°F (20°C) and 3.4 in (86 mm) of rain. September is inside the Jun – Sep window our Chicago & Great Lakes route recommends.
How hot is Door County in September?
Average highs are 69°F (20°C) and average lows 56°F (14°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Door County in September?
Some: about 3.4 in (86 mm) of rain falls across September on average, the 4th-wettest month of the year. The annual total is about 33.7 in (855 mm).
What should I pack for Door County in September?
Bring a warm layer for evenings (nights drop to 56°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).
More on Door County
Routes in season in September
- Chicago & Great Lakes Jun – Sep
Planning Door County in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.