Eau Claire (WI)
September
Weather in Eau Claire, Wisconsin for September 2026
Your guide to Eau Claire weather in September - trends and predictions
In general, the average temperature in Eau Claire at the beginning of September is 17.3 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.9 °F by the end of September.
The climate of Eau Claire in September is notably wet, with an average of 11 rainy days, and a total of 169.3 mm of precipitation.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
19
Dry days
11
Rainy days
0
Snow days
21°/13°
Temperatures
16 km/h
Avg max wind
83 %
Avg humidity
Eau Claire Weather September
Move between months or click on a day
Temperatures trend during September in Eau Claire
See the weather trend as well as the moving average line
September weather in Eau Claire day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Fog | 23° /9° | 0 mm | 5 | |
| Sept. 2 |  Moderate or heavy rain shower | 22° /14° | 17.4 mm | 5 | |
| Sept. 3 |  Light rain shower | 17° /8° | 48.4 mm | 4 | |
| Sept. 4 |  Cloudy | 14° /2° | 9.6 mm | 3 | |
| Sept. 5 |  Overcast | 14° /7° | 10.3 mm | 3 | |
| Sept. 6 | Overcast | 15° /9° | 0 mm | 4 | |
| Sept. 7 |  Sunny | 16° /4° | 0 mm | 5 | |
| Sept. 8 | Overcast | 21° /6° | 0 mm | 5 | |
| Sept. 9 | Moderate or heavy rain shower | 19° /14° | 22.8 mm | 4 | |
| Sept. 10 | Fog | 23° /14° | 2.1 mm | 5 | |
| Sept. 11 | Overcast | 21° /15° | 0 mm | 5 | |
| Sept. 12 | Overcast | 22° /16° | 0 mm | 5 | |
| Sept. 13 |  Thundery outbreaks possible | 27° /17° | 0 mm | 6 | |
| Sept. 14 | Cloudy | 27° /19° | 0 mm | 6 | |
| Sept. 15 | Thundery outbreaks possible | 27° /19° | 0 mm | 6 | |
| Sept. 16 |  Partly cloudy | 30° /18° | 0 mm | 8 | |
| Sept. 17 | Thundery outbreaks possible | 28° /18° | 0 mm | 6 | |
| Sept. 18 | Moderate or heavy rain shower | 27° /18° | 21.2 mm | 6 | |
| Sept. 19 | Light rain shower | 19° /15° | 16.6 mm | 4 | |
| Sept. 20 | Light rain shower | 20° /15° | 11.6 mm | 5 | |
| Sept. 21 | Light rain shower | 21° /15° | 7.2 mm | 5 | |
| Sept. 22 | Light rain shower | 21° /10° | 2.1 mm | 5 | |
| Sept. 23 | Fog | 20° /14° | 0 mm | 5 | |
| Sept. 24 | Mist | 19° /11° | 0 mm | 4 | |
| Sept. 25 | Fog | 15° /10° | 0 mm | 4 | |
| Sept. 26 | Fog | 19° /11° | 0 mm | 4 | |
| Sept. 27 | Fog | 20° /13° | 0 mm | 5 | |
| Sept. 28 | Sunny | 23° /7° | 0 mm | 6 | |
| Sept. 29 | Cloudy | 24° /11° | 0 mm | 5 | |
| Sept. 30 | Overcast | 26° /15° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Eau Claire 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 Eau Claire forecast closer to your planned date for the most up-to-date weather information.
Change Month
Eau Claire in September - FAQ
What are the expected maximum and minimum temperatures in Eau Claire during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Eau Claire during September?
Significant rainfall exceeding 169.3 mm is expected in Eau Claire during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Eau Claire during September?
The average wind speed in Eau Claire during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Eau Claire
Explore the daily rainfall trends and prepare for Eau Claires September weather 💧
UV exposure in Eau Claire during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
More Eau Claire weather pages
You are here
Where is Eau Claire?Get accurate weather forecasts for Eau Claire, located at latitude 44.811 and longitude -91.498. Stay updated with localized weather information tailored for Eau Claire.
Found a mistake?
We appreciate your attention to details. Tell us here.