Bewolking — 2000
| Month | Court-Saint-Étienne | Mont-Saint-Guibert | Difference |
|---|---|---|---|
| Jan | 78.5 % | – | – |
| Feb | 70.1 % | – | – |
| Mar | 82 % | – | – |
| Apr | 71.8 % | – | – |
| May | 72.7 % | – | – |
| Jun | 55.1 % | – | – |
| Jul | 78.9 % | – | – |
| Aug | 55.9 % | – | – |
| Sep |
| 73.8 % |
| – |
| – |
| Oct | 72.8 % | – | – |
| Nov | 78.2 % | – | – |
| Dec | 74.5 % | – | – |