Bewolking — 2020
| Month | Montigny-le-Tilleul | Ham-sur-Heure-Nalinnes | Difference |
|---|---|---|---|
| Jan | 71.8 % | 72 % | -0.2 |
| Feb | 79.2 % | 78.9 % | +0.3 |
| Mar | 56.3 % | 55.7 % | +0.6 |
| Apr | 34.3 % | 34.1 % | +0.2 |
| May | 50.2 % | 49.9 % | +0.3 |
| Jun | 64.6 % | 64.9 % | -0.3 |
| Jul | 62.8 % | 62.4 % | +0.4 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |