Wausau (WI)
September
Weather in Wausau, Wisconsin for September 2026
Your guide to Wausau weather in September - trends and predictions
In general, the average temperature in Wausau at the beginning of September is 18.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 22.4 °C by the end of September.
Wausau experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 78 mm.
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Temperatures
Rain 🌧️
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20
Dry days
10
Rainy days
0
Snow days
22°/11°
Temperatures
16 km/h
Avg max wind
79 %
Avg humidity
Wausau Weather September
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Temperatures trend during September in Wausau
See the weather trend as well as the moving average line
September weather in Wausau day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 21° /11° | 0 mm | 5 | |
| Sept. 2 | Sunny | 22° /9° | 0 mm | 6 | |
| Sept. 3 | Sunny | 19° /8° | 5.4 mm | 5 | |
| Sept. 4 | Sunny | 18° /6° | 0 mm | 5 | |
| Sept. 5 |  Moderate rain at times | 17° /9° | 10.5 mm | 4 | |
| Sept. 6 |  Patchy rain possible | 15° /6° | 0.2 mm | 4 | |
| Sept. 7 | Sunny | 17° /3° | 0 mm | 5 | |
| Sept. 8 |  Partly cloudy | 19° /3° | 0 mm | 5 | |
| Sept. 9 | Sunny | 21° /12° | 8.5 mm | 5 | |
| Sept. 10 | Patchy rain possible | 24° /12° | 19.4 mm | 6 | |
| Sept. 11 |  Cloudy | 24° /13° | 0 mm | 6 | |
| Sept. 12 | Sunny | 23° /14° | 0 mm | 6 | |
| Sept. 13 |  Overcast | 24° /15° | 4.8 mm | 6 | |
| Sept. 14 | Cloudy | 26° /13° | 0 mm | 6 | |
| Sept. 15 | Overcast | 27° /15° | 0 mm | 6 | |
| Sept. 16 | Sunny | 28° /15° | 0 mm | 7 | |
| Sept. 17 | Partly cloudy | 27° /15° | 0 mm | 7 | |
| Sept. 18 | Overcast | 25° /15° | 1.8 mm | 6 | |
| Sept. 19 | Cloudy | 21° /13° | 2.4 mm | 5 | |
| Sept. 20 | Overcast | 21° /15° | 4.7 mm | 5 | |
| Sept. 21 | Partly cloudy | 23° /14° | 2.4 mm | 6 | |
| Sept. 22 | Patchy rain possible | 19° /12° | 17.2 mm | 4 | |
| Sept. 23 | Sunny | 19° /11° | 0.6 mm | 5 | |
| Sept. 24 | Overcast | 19° /8° | 0 mm | 5 | |
| Sept. 25 | Overcast | 21° /8° | 0 mm | 5 | |
| Sept. 26 | Overcast | 20° /9° | 0 mm | 5 | |
| Sept. 27 | Overcast | 26° /11° | 0 mm | 6 | |
| Sept. 28 | Overcast | 24° /9° | 0 mm | 6 | |
| Sept. 29 | Sunny | 25° /10° | 0 mm | 6 | |
| Sept. 30 |  Mist | 22° /10° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Wausau 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 Wausau forecast closer to your planned date for the most up-to-date weather information.
Change Month
Wausau in September - FAQ
What are the expected maximum and minimum temperatures in Wausau during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Wausau during September?
Moderate rainfall is anticipated in Wausau during September, with a total of 78 mm spread over approximately 10 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Wausau during September?
The average wind speed in Wausau during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Wausau
Explore the daily rainfall trends and prepare for Wausaus September weather 💧
Typically, Wausau has 10 rainy days in September with a total of 78 mm of rainfall.
UV exposure in Wausau during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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