Bewolking — 2020
| Month | Voerendaal | Gulpen-Wittem | Difference |
|---|---|---|---|
| Jan | 70 % | 70 % | +0.0 |
| Feb | 78.6 % | 78.6 % | +0.0 |
| Mar | 56 % | 56 % | +0.0 |
| Apr | 31.8 % | 31.8 % | +0.0 |
| May | 49.6 % | 49.6 % | +0.0 |
| Jun | 62.8 % | 62.8 % | +0.0 |
| Jul | 62 % | 62 % | +0.0 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |