Click on a day for an hourly weather forecast
The temperatures in South Bend in September are comfortable with low of 13°C and and high up to 23°C.
You can expect about 3 to 8 days of rain in South Bend 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 South Bend in September 2025.
If you’re planning to visit South Bend in the near future, we highly recommend that you review the 14 day weather forecast for South Bend before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -7° | 5 | 7 | 19 | 92 mm | Awful | South Bend in January |
| February | 0° / -6° | 5 | 8 | 16 | 96 mm | Awful | South Bend in February |
| March | 8° / 0° | 8 | 16 | 7 | 108 mm | Awful | South Bend in March |
| April | 13° / 5° | 10 | 17 | 3 | 161 mm | Awful | South Bend in April |
| May | 20° / 11° | 10 | 21 | 0 | 164 mm | Ok | South Bend in May |
| June | 25° / 16° | 9 | 21 | 0 | 200 mm | Good | South Bend in June |
| July | 27° / 18° | 9 | 22 | 0 | 166 mm | Good | South Bend in July |
| August | 26° / 17° | 7 | 24 | 0 | 137 mm | Good | South Bend in August |
| September | 23° / 13° | 6 | 24 | 0 | 96 mm | Perfect | South Bend in September |
| October | 16° / 8° | 7 | 24 | 1 | 117 mm | Ok | South Bend in October |
| November | 8° / 2° | 6 | 17 | 7 | 90 mm | Bad | South Bend in November |
| December | 2° / -3° | 6 | 11 | 14 | 84 mm | Awful | South Bend in December |