Neerslag — 2009
| Month | Court-Saint-Étienne | Ottignies-Louvain-la-Neuve | Difference |
|---|---|---|---|
| Jan | 60.1 mm | – | – |
| Feb | 55.6 mm | – | – |
| Mar | 54.5 mm | – | – |
| Apr | 52.6 mm | – | – |
| May | 86.1 mm | – | – |
| Jun | 57.7 mm | – | – |
| Jul | 66.1 mm | – | – |
| Aug | 44.8 mm | – | – |
| Sep |
| 22.7 mm |
| – |
| – |
| Oct | 49.6 mm | – | – |
| Nov | 94.3 mm | – | – |
| Dec | 89.7 mm | – | – |