Neerslag — 2020
| Mois | Lens | Chièvres | Différence |
|---|---|---|---|
| Jan | 40.8 mm | 43 mm | -2.2 |
| Fév | 135.2 mm | 135.2 mm | +0.0 |
| Mar | 70.5 mm | 72.8 mm | -2.3 |
| Avr | 21.9 mm | 22.7 mm | -0.8 |
| Mai | 20.6 mm | 18.2 mm | +2.4 |
| Juin | 42.2 mm | 38.4 mm | +3.8 |
| Juil | 46.7 mm | 42.2 mm | +4.5 |
| Aoû |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |