Click on a day for an hourly weather forecast
The temperatures in Mont Tremblant in September are quite cold with temperatures between 7°C and 17°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Mont Tremblant 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 Mont Tremblant in September 2025.
If you’re planning to visit Mont Tremblant in the near future, we highly recommend that you review the 14 day weather forecast for Mont Tremblant before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -9° / -16° | 4 | 3 | 25 | 124 mm | Awful | Mont Tremblant in January |
| February | -7° / -15° | 4 | 1 | 24 | 122 mm | Awful | Mont Tremblant in February |
| March | -2° / -9° | 8 | 3 | 22 | 125 mm | Awful | Mont Tremblant in March |
| April | 6° / -2° | 11 | 7 | 12 | 159 mm | Awful | Mont Tremblant in April |
| May | 16° / 5° | 9 | 20 | 1 | 144 mm | Ok | Mont Tremblant in May |
| June | 20° / 9° | 9 | 21 | 0 | 153 mm | Ok | Mont Tremblant in June |
| July | 23° / 12° | 8 | 23 | 0 | 154 mm | Good | Mont Tremblant in July |
| August | 22° / 11° | 7 | 24 | 0 | 146 mm | Ok | Mont Tremblant in August |
| September | 17° / 7° | 7 | 23 | 0 | 131 mm | Ok | Mont Tremblant in September |
| October | 10° / 2° | 11 | 16 | 4 | 159 mm | Awful | Mont Tremblant in October |
| November | 2° / -4° | 9 | 8 | 14 | 124 mm | Awful | Mont Tremblant in November |
| December | -5° / -10° | 7 | 2 | 23 | 143 mm | Awful | Mont Tremblant in December |