Click on a day for an hourly weather forecast
The temperatures in Wisconsin Dells in September are comfortable with low of 11°C and and high up to 22°C.
You can expect about 3 to 8 days of rain in Wisconsin Dells during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Wisconsin Dells in September 2025.
If you’re planning to visit Wisconsin Dells in the near future, we highly recommend that you review the 14 day weather forecast for Wisconsin Dells before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -6° / -12° | 3 | 10 | 17 | 25 mm | Awful | Wisconsin Dells in January |
| February | -4° / -11° | 3 | 10 | 16 | 28 mm | Awful | Wisconsin Dells in February |
| March | 5° / -3° | 6 | 16 | 9 | 45 mm | Awful | Wisconsin Dells in March |
| April | 11° / 2° | 6 | 19 | 5 | 67 mm | Bad | Wisconsin Dells in April |
| May | 19° / 9° | 7 | 24 | 0 | 79 mm | Ok | Wisconsin Dells in May |
| June | 24° / 14° | 6 | 24 | 0 | 93 mm | Perfect | Wisconsin Dells in June |
| July | 26° / 16° | 5 | 26 | 0 | 67 mm | Perfect | Wisconsin Dells in July |
| August | 26° / 15° | 4 | 27 | 0 | 62 mm | Perfect | Wisconsin Dells in August |
| September | 22° / 11° | 3 | 27 | 0 | 51 mm | Good | Wisconsin Dells in September |
| October | 14° / 5° | 5 | 24 | 2 | 51 mm | Ok | Wisconsin Dells in October |
| November | 6° / -1° | 4 | 20 | 6 | 39 mm | Awful | Wisconsin Dells in November |
| December | -2° / -7° | 4 | 13 | 14 | 31 mm | Awful | Wisconsin Dells in December |