Click on a day for an hourly weather forecast
The temperatures in Sault Ste. Marie in September are quite cold with temperatures between 9°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Sault Ste. Marie 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 Sault Ste. Marie in September 2025.
If you’re planning to visit Sault Ste. Marie in the near future, we highly recommend that you review the 14 day weather forecast for Sault Ste. Marie before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -7° / -14° | 4 | 2 | 26 | 83 mm | Awful | Sault Ste. Marie in January |
| February | -6° / -14° | 3 | 2 | 24 | 83 mm | Awful | Sault Ste. Marie in February |
| March | 0° / -8° | 8 | 6 | 18 | 85 mm | Awful | Sault Ste. Marie in March |
| April | 6° / -2° | 9 | 10 | 11 | 117 mm | Awful | Sault Ste. Marie in April |
| May | 15° / 5° | 7 | 23 | 1 | 102 mm | Ok | Sault Ste. Marie in May |
| June | 20° / 9° | 7 | 23 | 0 | 116 mm | Ok | Sault Ste. Marie in June |
| July | 23° / 12° | 7 | 24 | 0 | 102 mm | Good | Sault Ste. Marie in July |
| August | 23° / 12° | 7 | 24 | 0 | 109 mm | Good | Sault Ste. Marie in August |
| September | 18° / 9° | 6 | 24 | 0 | 113 mm | Good | Sault Ste. Marie in September |
| October | 10° / 4° | 11 | 15 | 5 | 167 mm | Awful | Sault Ste. Marie in October |
| November | 3° / -2° | 7 | 8 | 16 | 112 mm | Awful | Sault Ste. Marie in November |
| December | -3° / -8° | 7 | 2 | 24 | 104 mm | Awful | Sault Ste. Marie in December |