Neerslag — 2020
| Month | Olen | Westerlo | Difference |
|---|---|---|---|
| Jan | 38.4 mm | 37.3 mm | +1.1 |
| Feb | 138.4 mm | 133.1 mm | +5.3 |
| Mar | 69.9 mm | 67 mm | +2.9 |
| Apr | 20.1 mm | 24.7 mm | -4.6 |
| May | 16.5 mm | 19 mm | -2.5 |
| Jun | 86 mm | 93.3 mm | -7.3 |
| Jul | 64.8 mm | 56.1 mm | +8.7 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |