Temperatuur — 1997
| Month | Court-Saint-Étienne | Mont-Saint-Guibert | Difference |
|---|---|---|---|
| Jan | -0.6 °C | – | – |
| Feb | 6.3 °C | – | – |
| Mar | 8.4 °C | – | – |
| Apr | 7.8 °C | – | – |
| May | 12.7 °C | – | – |
| Jun | 15.8 °C | – | – |
| Jul | 17.1 °C | – | – |
| Aug | 20.8 °C | – | – |
| Sep |
| 15 °C |
| – |
| – |
| Oct | 10 °C | – | – |
| Nov | 7.3 °C | – | – |
| Dec | 4.9 °C | – | – |