Bewolking — 2013
| Month | Court-Saint-Étienne | Mont-Saint-Guibert | Difference |
|---|---|---|---|
| Jan | 85.4 % | – | – |
| Feb | 77.7 % | – | – |
| Mar | 73.8 % | – | – |
| Apr | 70.6 % | – | – |
| May | 77.7 % | – | – |
| Jun | 71.3 % | – | – |
| Jul | 58.9 % | – | – |
| Aug | 55.8 % | – | – |
| Sep |
| 64.4 % |
| – |
| – |
| Oct | 74 % | – | – |
| Nov | 83.3 % | – | – |
| Dec | 68.1 % | – | – |