Bewolking — 2023
| Month | Attert | Arlon | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 88.9 % | 88.4 % | +0.5 |
| Apr | 70 % | 69.8 % | +0.2 |
| May | 57.1 % | 56.9 % | +0.2 |
| Jun | 38.9 % | 38.2 % | +0.7 |
| Jul | 62.5 % | 62.3 % | +0.2 |
| Aug |
| 58.9 % |
| 58.6 % |
| +0.3 |
| Sep | 51.8 % | 51.3 % | +0.5 |
| Oct | 76.1 % | 75.7 % | +0.4 |
| Nov | 90 % | 89.4 % | +0.6 |
| Dec | 95.1 % | 95.4 % | -0.3 |