More often than not you can expect weather in Whistler for the duration of September is 12 with usual highs being around 20 and low being around 8 degrees. For more context we have put some more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 12 |
| High Temperature | 20 |
| Low Temperature | 8 |
| Sunshine Per Day | 8 |
Useful Links: Whistler Weather: Average Weather & Yearly Climate