Click on a day for an hourly weather forecast
The weather in Canmore in September is very cold with temperatures between 2°C and 10°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Canmore 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.
Please note that Canmore can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Canmore in September 2025.
If you’re planning to visit Canmore in the near future, we highly recommend that you review the 14 day weather forecast for Canmore before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -8° / -16° | 11 | 2 | 21 | 44 mm | Awful | Canmore in January |
| February | -8° / -17° | 10 | 1 | 22 | 49 mm | Awful | Canmore in February |
| March | -3° / -11° | 12 | 1 | 25 | 80 mm | Awful | Canmore in March |
| April | 1° / -6° | 11 | 2 | 21 | 127 mm | Awful | Canmore in April |
| May | 7° / 0° | 15 | 8 | 9 | 180 mm | Awful | Canmore in May |
| June | 12° / 5° | 16 | 13 | 1 | 242 mm | Bad | Canmore in June |
| July | 17° / 8° | 13 | 18 | 0 | 159 mm | Ok | Canmore in July |
| August | 16° / 8° | 9 | 22 | 0 | 115 mm | Ok | Canmore in August |
| September | 10° / 2° | 7 | 20 | 2 | 83 mm | Awful | Canmore in September |
| October | 1° / -6° | 9 | 8 | 14 | 75 mm | Awful | Canmore in October |
| November | -5° / -13° | 11 | 2 | 21 | 73 mm | Awful | Canmore in November |
| December | -10° / -18° | 10 | 3 | 22 | 51 mm | Awful | Canmore in December |