Bewolking — 2020
| Month | Horst aan de Maas | Venlo | Difference |
|---|---|---|---|
| Jan | 76.9 % | 74 % | +2.9 |
| Feb | 76.7 % | 76.5 % | +0.2 |
| Mar | 52.7 % | 53.2 % | -0.5 |
| Apr | 33.7 % | 32.2 % | +1.5 |
| May | 49.5 % | 49.1 % | +0.4 |
| Jun | 66.5 % | 64.6 % | +1.9 |
| Jul | 64.3 % | 63.5 % | +0.8 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |