Bewolking — 2020
| Maand | Herselt | Westerlo | Verschil |
|---|---|---|---|
| Jan | 74.7 % | 74.9 % | -0.2 |
| Feb | 75.3 % | 75.5 % | -0.2 |
| Mrt | 53.5 % | 53.5 % | +0.0 |
| Apr | 33.3 % | 33.5 % | -0.2 |
| Mei | 48.3 % | 48.5 % | -0.2 |
| Jun | 63.3 % | 62.9 % | +0.4 |
| Jul | 61.8 % | 61.4 % | +0.4 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |