Luchtvochtigheid — 2009
| Month | Mont-Saint-Guibert | Court-Saint-Étienne | Difference |
|---|---|---|---|
| Jan | – | 84.4 % | – |
| Feb | – | 86.8 % | – |
| Mar | – | 79.2 % | – |
| Apr | – | 78.2 % | – |
| May | – | 76.7 % | – |
| Jun | – | 74.8 % | – |
| Jul | – | 72.4 % | – |
| Aug | – | 68.2 % | – |
| Sep |
| – |
| 76.8 % |
| – |
| Oct | – | 80.3 % | – |
| Nov | – | 84.4 % | – |
| Dec | – | 88 % | – |