Luchtvochtigheid — 2004
| Month | Court-Saint-Étienne | Ottignies-Louvain-la-Neuve | Difference |
|---|---|---|---|
| Jan | 86.8 % | – | – |
| Feb | 81.6 % | – | – |
| Mar | 78 % | – | – |
| Apr | 75.7 % | – | – |
| May | 73.7 % | – | – |
| Jun | 75.5 % | – | – |
| Jul | 76.3 % | – | – |
| Aug | 76.9 % | – | – |
| Sep |
| 75.1 % |
| – |
| – |
| Oct | 79.2 % | – | – |
| Nov | 88.2 % | – | – |
| Dec | 91.8 % | – | – |