Luchtvochtigheid — 1999
| Month | Rijkevorsel | Merksplas | Difference |
|---|---|---|---|
| Jan | 84.1 % | 84.2 % | -0.1 |
| Feb | 84.8 % | 85 % | -0.2 |
| Mar | 81.4 % | 81.8 % | -0.4 |
| Apr | 79.6 % | 79.6 % | +0.0 |
| May | 71.9 % | 72.1 % | -0.2 |
| Jun | 72.6 % | 72.8 % | -0.2 |
| Jul | 69.9 % | 70.2 % | -0.3 |
| Aug |
| 73.5 % |
| 73.4 % |
| +0.1 |
| Sep | 76.4 % | 76.4 % | +0.0 |
| Oct | 80.3 % | 80.5 % | -0.2 |
| Nov | 84 % | 84.4 % | -0.4 |
| Dec | 85.8 % | 85.8 % | +0.0 |