Neerslag — 2020
| Mois | Genappe | Lasne | Différence |
|---|---|---|---|
| Jan | 42.6 mm | 35.2 mm | +7.4 |
| Fév | 135.3 mm | 123.9 mm | +11.4 |
| Mar | 72.6 mm | 65.9 mm | +6.7 |
| Avr | 23.8 mm | 23.2 mm | +0.6 |
| Mai | 24 mm | 18.1 mm | +5.9 |
| Juin | 65.9 mm | 68.9 mm | -3.0 |
| Juil | 50.2 mm | 51.1 mm | -0.9 |
| Aoû |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |