Bewolking — 2020
| Month | Welkenraedt | Limbourg | Difference |
|---|---|---|---|
| Jan | 70 % | 75.4 % | -5.4 |
| Feb | 78.6 % | 82 % | -3.4 |
| Mar | 56 % | 58.3 % | -2.3 |
| Apr | 31.8 % | 32.8 % | -1.0 |
| May | 49.6 % | 50.5 % | -0.9 |
| Jun | 62.8 % | 64.3 % | -1.5 |
| Jul | 62 % | 63.3 % | -1.3 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |