Temperatuur — 2003
| Month | Court-Saint-Étienne | Ottignies-Louvain-la-Neuve | Difference |
|---|---|---|---|
| Jan | 2.1 °C | – | – |
| Feb | 2.1 °C | – | – |
| Mar | 7.8 °C | – | – |
| Apr | 9.8 °C | – | – |
| May | 13.7 °C | – | – |
| Jun | 19.1 °C | – | – |
| Jul | 19.2 °C | – | – |
| Aug | 20.7 °C | – | – |
| Sep |
| 15.4 °C |
| – |
| – |
| Oct | 8.2 °C | – | – |
| Nov | 8.5 °C | – | – |
| Dec | 4.1 °C | – | – |