Normal weather for Milwaukee in September
It's warm in September in Milwaukee with an average temperature of 23°C. Temperatures this month range from a low of 16°C to a high of 28°C. At night, you can expect temperatures between 10°C and 19°C.
In September, there is an average of 118 mm of precipitation, spread over 14 days. The wind speed is around 4 Bft, mostly coming from the South.
Milwaukee in September |
London | ||
|---|---|---|---|
 Average Temperature |
23°C | 20°C | |
 High Temp |
28°C | 22°C | |
| Low Temp |
16°C | 17°C | |
 Total Precipitation |
118 mm | 44 mm | |
| Rainy Days |
14 days | 8 days | |
Start of September
The month of September starts in Milwaukee with warm temperatures, averaging around 26°C during the day and nights close to 17°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Since temperatures can differ between day and night, it’s a good idea to dress in layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. For the evening and morning, a shirt, maybe a light cardigan, and light trousers will do.
Mid-September
By mid-September, the average daytime temperature drops to around 21°C, with nights close to 13°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
Temperatures vary between day and night, so it’s smart to wear layers. During the day, a shirt, maybe a light cardigan, and light trousers will do. In the evening and morning, we recommend a light coat, jumper or cardigan, and long trousers.
End of September
By the end of September, the average daytime temperature in Milwaukee will be around 22°C, with nights close to 13°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers. A T-shirt, light trousers or skirt, and a light jacket are perfect for daytime. In the evening and morning, we recommend a light coat, jumper or cardigan, and long trousers.
Discover cheap trips to Milwaukee 
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Milwaukee?
After some sun? Then September isn’t the best time to be in Milwaukee. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Milwaukee in September
With 35°C, Milwaukee hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 10°C in 2014. The extreme night temperatures ranged from a low of 4°C to a high of 25°C.
Check out the climate of Milwaukee for all months and discover the best travel time
August
Plan your next holiday
Don’t miss the best holiday deals for Milwaukee and see what our partners have for you.
Daily Temperature in September in Milwaukee
This chart shows the average daily temperatures, both day and night, for each day in September in Milwaukee, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Milwaukee
The chart below shows the average daily precipitation in September for Milwaukee, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 14 days of rain in Milwaukee.
Daily UV Index in September in Milwaukee
This chart shows the average daily UV index in September in Milwaukee, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Milwaukee Over the Years
This chart shows the average temperature in September in Milwaukee, measured in degrees Celsius, over the past years.
Total Precipitation in September in Milwaukee Over the Years
This chart shows the average precipitation in September in Milwaukee, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Milwaukee
Click on a specific day in September for detailed info on the typical weather on that day in Milwaukee. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Milwaukee
Have you been to Milwaukee in September?
Share your weather experience in September in Milwaukee.
Average Weather in Milwaukee by Month
Click on a month below to see detailed weather info for Milwaukee. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Milwaukee for all months at once
