Weather in Wausau, Wisconsin for September 2026
Until now, September 2026 in Wausau has been nearly identical to the historical average, with a temperature of 21.7 °F (showing only a slight deviation of 0.2 °F).
The forecast for the next days in Wausau predicts a temperature of 15.6 °F, which is cooler than the historical average.
In general, the average temperature in Wausau at the beginning of September is 22.1 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 19.3 °F 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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Wausau Weather September
Temperatures trend during September in Wausau
September weather in Wausau day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 26° /13° | 0 mm | 6 | |
| Sept. 2 | Sunny | 25° /12° | 5.4 mm | 4 | |
| Sept. 3 | Sunny | 22° /11° | 22.5 mm | 4 | |
| Sept. 4 | Sunny | 22° /10° | 4.1 mm | 4 | |
| Sept. 5 |  Moderate rain at times | 20° /12° | 7 mm | 5 | |
| Sept. 6 |  Patchy rain possible | 20° /9° | 0.2 mm | 5 | |
| Sept. 7 | Sunny | 20° /7° | 0 mm | 4 | |
| Sept. 8 |  Partly cloudy | 21° /7° | 96.6 mm | 4 | |
| Sept. 9 | Sunny | 23° /13° | 5.7 mm | 5 | |
| Sept. 10 | Patchy rain possible | 24° /11° | 13 mm | 6 | |
| Sept. 11 |  Cloudy | 25° /12° | 0 mm | 6 | |
| Sept. 12 | Sunny | 23° /14° | 0.1 mm | 4 | |
| Sept. 13 |  Overcast | 22° /13° | 3.2 mm | 5 | |
| Sept. 14 | Cloudy | 24° /11° | 8.9 mm | 5 | |
| Sept. 15 | Overcast | 24° /14° | 2.3 mm | 4 | |
| Sept. 16 | Sunny | 25° /13° | 0 mm | 5 | |
| Sept. 17 | Partly cloudy | 25° /13° | 1.5 mm | 5 | |
| Sept. 18 | Overcast | 22° /14° | 2.7 mm | 4 | |
| Sept. 19 | Cloudy | 19° /12° | 2.1 mm | 4 | |
| Sept. 20 | Overcast | 20° /12° | 3.2 mm | 3 | |
| Sept. 21 | Partly cloudy | 20° /11° | 1.6 mm | 4 | |
| Sept. 22 | Patchy rain possible | 18° /10° | 11.5 mm | 4 | |
| Sept. 23 | Sunny | 18° /9° | 0.4 mm | 4 | |
| Sept. 24 | Overcast | 19° /8° | 0 mm | 3 | |
| Sept. 25 | Overcast | 20° /9° | 0.4 mm | 4 | |
| Sept. 26 | Overcast | 20° /9° | 0 mm | 5 | |
| Sept. 27 | Overcast | 18° /11° | 0 mm | 2.9 | |
| Sept. 28 | Sunny | 21° /13° | 0 mm | 5 | |
| Sept. 29 | Overcast | 18° /13° | 17.2 mm | 3 | |
| Sept. 30 | Overcast | 19° /14° | 8 mm | 1.5 | |
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Wausau in September - FAQ
What are the expected maximum and minimum temperatures in Wausau during September?
How much rainfall should be expected in Wausau during September?
What are the typical wind conditions in Wausau during September?
September rainfall patterns in Wausau
UV exposure in Wausau during September
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Where is Wausau?Get accurate weather forecasts for Wausau, located at latitude 44.959 and longitude -89.63. Stay updated with localized weather information tailored for Wausau.