Milwaukee County (Milwaukee)
September
Weather in Milwaukee County for September 2025
Your guide to Milwaukee County weather in September - trends and predictions
In general, the average temperature in Milwaukee County at the beginning of September is 27.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.6 °F by the end of September.
Milwaukee County experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 45.1 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
21
Dry days
9
Rainy days
0
Snow days
24°/14°
Temperatures
17 km/h
Avg max wind
69 %
Avg humidity
Milwaukee County in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  26° | 2  29° | 3  31° | 4  32° | 5 32° | 6  26° | 7 18° |
| 8 21° | 9 24° | 10 27° | 11  25° | 12 24° | 13 21° | 14 23° |
| 15 28° | 16 28° | 17 23° | 18 22° | 19  23° | 20 27° | 21 28° |
| 22 24° | 23 22° | 24 21° | 25 22° | 26 22° | 27 20° | 28 20° |
| 29 21° | 30 25° |
You can click on date
Access Milwaukee County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Milwaukee County
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Mist | 26° /13° | 0 mm | 7 | |
| Sept. 2 | Partly cloudy | 29° /14° | 0 mm | 8 | |
| Sept. 3 | Cloudy | 31° /15° | 0 mm | 7 | |
| Sept. 4 | Overcast | 32° /16° | 0 mm | 8 | |
| Sept. 5 | Overcast | 32° /19° | 2 mm | 8 | |
| Sept. 6 | Light rain shower | 26° /14° | 2.4 mm | 6 | |
| Sept. 7 | Overcast | 18° /9° | 0.8 mm | 5 | |
| Sept. 8 | Cloudy | 21° /8° | 0 mm | 6 | |
| Sept. 9 | Mist | 24° /12° | 0 mm | 6 | |
| Sept. 10 | Mist | 27° /11° | 0 mm | 7 | |
| Sept. 11 | Light rain | 25° /14° | 2.1 mm | 6 | |
| Sept. 12 | Overcast | 24° /13° | 0 mm | 6 | |
| Sept. 13 | Light rain shower | 21° /14° | 3.9 mm | 5 | |
| Sept. 14 | Mist | 23° /13° | 0 mm | 6 | |
| Sept. 15 | Mist | 28° /13° | 0 mm | 7 | |
| Sept. 16 | Patchy light drizzle | 28° /16° | 1.8 mm | 7 | |
| Sept. 17 | Light rain shower | 23° /14° | 1.8 mm | 6 | |
| Sept. 18 | Cloudy | 22° /11° | 0 mm | 5 | |
| Sept. 19 | Thundery outbreaks possible | 23° /14° | 0 mm | 5 | |
| Sept. 20 | Thundery outbreaks possible | 27° /15° | 0.1 mm | 6 | |
| Sept. 21 | Patchy rain possible | 28° /15° | 0 mm | 7 | |
| Sept. 22 | Mist | 24° /16° | 11.4 mm | 6 | |
| Sept. 23 | Fog | 22° /12° | 0 mm | 5 | |
| Sept. 24 | Overcast | 21° /13° | 0 mm | 5 | |
| Sept. 25 | Patchy rain possible | 22° /13° | 0.1 mm | 5 | |
| Sept. 26 | Light rain shower | 22° /14° | 15.1 mm | 5 | |
| Sept. 27 | Light rain shower | 20° /14° | 3.6 mm | 5 | |
| Sept. 28 | Patchy rain possible | 20° /15° | 0 mm | 5 | |
| Sept. 29 | Fog | 21° /14° | 0 mm | 5 | |
| Sept. 30 | Overcast | 25° /15° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Milwaukee County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Milwaukee County forecast closer to your planned date for the most up-to-date weather information.
Milwaukee County in September - FAQ
What are the expected maximum and minimum temperatures in Milwaukee County during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Milwaukee County during September?
In September, Milwaukee County can expect light to moderate rainfall, totaling 45.1 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Milwaukee County during September?
The average wind speed in Milwaukee County during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Milwaukee County
Explore the daily rainfall trends and prepare for Milwaukee Countys September weather 💧
UV exposure in Milwaukee County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Milwaukee County
Select a location for an accurate weather forecast
More Locations Quick links
You are here
Where is Milwaukee County?Get accurate weather forecasts for Milwaukee County, located at latitude 43.039 and longitude -87.906. Stay updated with localized weather information tailored for Milwaukee County.
Found a mistake?
We appreciate your attention to details. Tell us here.