Click on a day for an hourly weather forecast
The temperatures in Belleville in September are comfortable with low of 13°C and and high up to 21°C.
You can expect about 3 to 8 days of rain in Belleville 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 Belleville in September 2025.
If you’re planning to visit Belleville in the near future, we highly recommend that you review the 14 day weather forecast for Belleville before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -4° / -9° | 6 | 6 | 19 | 86 mm | Awful | Belleville in January |
| February | -3° / -9° | 5 | 6 | 18 | 79 mm | Awful | Belleville in February |
| March | 3° / -4° | 6 | 13 | 13 | 76 mm | Awful | Belleville in March |
| April | 9° / 2° | 9 | 18 | 3 | 111 mm | Awful | Belleville in April |
| May | 17° / 8° | 5 | 26 | 0 | 95 mm | Good | Belleville in May |
| June | 22° / 13° | 6 | 24 | 0 | 118 mm | Good | Belleville in June |
| July | 26° / 16° | 5 | 26 | 0 | 97 mm | Perfect | Belleville in July |
| August | 25° / 16° | 5 | 26 | 0 | 125 mm | Perfect | Belleville in August |
| September | 21° / 13° | 5 | 25 | 0 | 98 mm | Good | Belleville in September |
| October | 14° / 7° | 8 | 23 | 1 | 127 mm | Ok | Belleville in October |
| November | 7° / 1° | 7 | 16 | 7 | 84 mm | Awful | Belleville in November |
| December | 0° / -4° | 7 | 11 | 14 | 100 mm | Awful | Belleville in December |