Bewolking — 2005
| Month | Court-Saint-Étienne | Mont-Saint-Guibert | Difference |
|---|---|---|---|
| Jan | 69.8 % | – | – |
| Feb | 70.8 % | – | – |
| Mar | 77.9 % | – | – |
| Apr | 68.7 % | – | – |
| May | 67.9 % | – | – |
| Jun | 60.4 % | – | – |
| Jul | 66.3 % | – | – |
| Aug | 55.2 % | – | – |
| Sep |
| 51 % |
| – |
| – |
| Oct | 60.2 % | – | – |
| Nov | 70.9 % | – | – |
| Dec | 76.5 % | – | – |