Temperatuur — 2020
| Mois | Héron | Braives | Différence |
|---|---|---|---|
| Jan | 5.1 °C | 5 °C | +0.1 |
| Fév | 6.4 °C | 6.2 °C | +0.2 |
| Mar | 6.5 °C | 6.4 °C | +0.1 |
| Avr | 11.9 °C | 11.9 °C | +0.0 |
| Mai | 13.3 °C | 13.2 °C | +0.1 |
| Juin | 16.8 °C | 16.8 °C | +0.0 |
| Juil | 17.4 °C | 17.3 °C | +0.1 |
| Aoû |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |