Early autumn · Weather & things to do
Milwaukee in September
Milwaukee cools off: highs slip to 74°F (23°C), from 81°F in August, with lows of 55°F (13°C) and about 3.5 in (90 mm) of rain.
September opens the best stretch on our comfort score, at 84/100 (the top score of the year).
- Avg high
- 74°F (23°C)
- Avg low
- 55°F (13°C)
- Rain
- 3.5 in (90 mm)
- Humidity
- 76%
- Cloud cover
- 60%
- Daylight
- ~12 h 17 min
- Comfort score
- 84/100 · Great
What September feels like
Days are warm, averaging 74°F (23°C), easy weather for being outside from morning to evening.
Lows average 55°F (13°C).
Showers are part of the month, adding up to about 3.5 in (90 mm).
Plan around September
September is one of Milwaukee's best months on the climate data.
- Last warm month for a while: October highs fall to 60°F.
- Opens the best-scoring stretch on our comfort score: September.
- Comfort improves from 77/100 in August to 84/100.
- September sits inside the Jun – Sep window our Chicago & Great Lakes route recommends.
- Our Chicago & Milwaukee route is planned for Late Nov – Dec 24, a window set by the holiday season rather than the weather — September falls outside it.
What to pack for September
- Light, breathable clotheshighs average 74°F
- Packable rain jacket or umbrellaabout 3.5 in of rain
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Milwaukee in September
September is good outdoor weather here, so these picks lean toward the open air.
Pabst Mansion
1892 Flemish Renaissance mansion of beer baron Frederick Pabst.
Sobelman's Pub & Grill
Burgers and over-the-top Bloody Marys in a corner tavern near Marquette.
Kopp's Frozen Custard
Classic Milwaukee frozen custard stand with daily flavors and big burgers.
Lakefront Brewery
Riverside brewery known for its entertaining tours and Friday fish fry.
Harley-Davidson Museum
Over 100 years of motorcycles in the company's hometown.
Nearby in September
- Chicago in September~81 mi · highs 71°F, 3.4 in rain · 1°C (3°F) cooler by day, about as wet
- Holland in September~93 mi · highs 70°F, 3.2 in rain · 2°C (4°F) cooler by day, about as wet
- Indiana Dunes in September~105 mi · highs 76°F, 3.1 in rain · 1°C (2°F) warmer by day, about as wet
- Door County in September~140 mi · highs 69°F, 3.4 in rain · 3°C (5°F) cooler by day, about as wet
These averages also cover Bradford Beach & the Lakefront and Deer District & Downtown Milwaukee.
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.
Milwaukee in September: quick answers
Is September a good time to visit Milwaukee?
Yes. On the climate data it's one of the best months, scoring 84/100. Expect highs of 74°F (23°C) and 3.5 in (90 mm) of rain. September is inside the Jun – Sep window our Chicago & Great Lakes route recommends.
How hot is Milwaukee in September?
Average highs are 74°F (23°C) and average lows 55°F (13°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Milwaukee in September?
Some: about 3.5 in (90 mm) of rain falls across September on average, the 6th-wettest month of the year. The annual total is about 37.3 in (948 mm).
What should I pack for Milwaukee in September?
Bring light, breathable clothes (highs average 74°F), packable rain jacket or umbrella (about 3.5 in of rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on Milwaukee
Routes in season in September
- Chicago & Great Lakes Jun – Sep
Planning Milwaukee in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.