Bewolking — 2020
| Month | Tessenderlo | Ham | Difference |
|---|---|---|---|
| Jan | 74.9 % | 74.8 % | +0.1 |
| Feb | 75.5 % | 76.2 % | -0.7 |
| Mar | 53.5 % | 53.9 % | -0.4 |
| Apr | 33.5 % | 33.1 % | +0.4 |
| May | 48.5 % | 48.9 % | -0.4 |
| Jun | 62.9 % | 63.6 % | -0.7 |
| Jul | 61.4 % | 61.3 % | +0.1 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |