Bewolking — 2020
| Maand | Érezée | Ferrières | Verschil |
|---|---|---|---|
| Jan | 74.3 % | 73.1 % | +1.2 |
| Feb | 81.4 % | 80.8 % | +0.6 |
| Mrt | 58.7 % | 58.3 % | +0.4 |
| Apr | 32 % | 33.9 % | -1.9 |
| Mei | 49.9 % | 49.9 % | +0.0 |
| Jun | 63.2 % | 63.4 % | -0.2 |
| Jul | 62.1 % | 62.5 % | -0.4 |
| Aug |
| – |
| 62 % |
| – |
| Sep | – | 56.6 % | – |
| Okt | – | 82.4 % | – |
| Nov | – | 62.5 % | – |
| Dec | – | 87.5 % | – |