Frequently the average temperatures in Richelieu all through the month of September is 15. Through the month the highs are about 22 and low around 11. We have put some more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 15 |
| High Temperature | 22 |
| Low Temperature | 11 |
Useful Links: Richelieu Weather: Average Weather & Yearly Climate