Bewolking — 2020
| Maand | Grâce-Hollogne | Seraing | Verschil |
|---|---|---|---|
| Jan | 71.1 % | 71.5 % | -0.4 |
| Feb | 77.6 % | 80.4 % | -2.8 |
| Mrt | 55.9 % | 57.6 % | -1.7 |
| Apr | 32.8 % | 31.7 % | +1.1 |
| Mei | 48.7 % | 49.8 % | -1.1 |
| Jun | 62.8 % | 62.9 % | -0.1 |
| Jul | 61.2 % | 62.7 % | -1.5 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |