Normally average temperatures in Laval for the month of September is 15. Throughout the month you should see a high of 22 degrees celsius and a low of 11. The table below has further info:
| Month | Degrees Celsius |
|---|---|
| Temperature | 15 |
| High Temperature | 22 |
| Low Temperature | 11 |
| Sunshine Per Day | 8 |
Useful Links: Laval Weather: Average Weather & Yearly Climate