Bewolking — 1999
| Month | Villers-la-Ville | Court-Saint-Étienne | Difference |
|---|---|---|---|
| Jan | 80.3 % | 78.2 % | +2.1 |
| Feb | 77.5 % | 77.4 % | +0.1 |
| Mar | 79.3 % | 78.4 % | +0.9 |
| Apr | 65.7 % | 63.7 % | +2.0 |
| May | 65.8 % | 65.7 % | +0.1 |
| Jun | 59.1 % | 56.5 % | +2.6 |
| Jul | 55.2 % | 53.7 % | +1.5 |
| Aug |
| 72.1 % |
| 71.1 % |
| +1.0 |
| Sep | 63.9 % | 63.2 % | +0.7 |
| Oct | 62.7 % | 61.8 % | +0.9 |
| Nov | 77.1 % | 76.1 % | +1.0 |
| Dec | 82.7 % | 80.1 % | +2.6 |