Bewolking — 2023
| Month | Dalhem | Blégny | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 86.7 % | 86.3 % | +0.4 |
| Apr | 68 % | 67.9 % | +0.1 |
| May | 64.5 % | 64.1 % | +0.4 |
| Jun | 42.7 % | 42.7 % | +0.0 |
| Jul | 65.4 % | 66.4 % | -1.0 |
| Aug |
| 60.7 % |
| 61.4 % |
| -0.7 |
| Sep | 57.1 % | 56.6 % | +0.5 |
| Oct | 77.4 % | 77.7 % | -0.3 |
| Nov | 82.1 % | 83.4 % | -1.3 |
| Dec | 87.6 % | 88 % | -0.4 |