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