Frequently the weather in Richelieu right-through October is 12. Through the month the highs are about 18 and low around 9 degrees. We have put some more details below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 12 |
| High Temperature | 18 |
| Low Temperature | 9 |
Useful Links: Richelieu Weather: Average Weather & Yearly Climate