Temperatuur — 2023
| Mois | Spiere-Helkijn | Pecq | Différence |
|---|---|---|---|
| Jan | – | – | – |
| Fév | – | – | – |
| Mar | 8.3 °C | 7.8 °C | +0.5 |
| Avr | 8.5 °C | 8.5 °C | +0.0 |
| Mai | 13.1 °C | 13.1 °C | +0.0 |
| Juin | 19.7 °C | 19.7 °C | +0.0 |
| Juil | 18.3 °C | 18.3 °C | +0.0 |
| Aoû |
| 17.9 °C |
| 17.9 °C |
| +0.0 |
| Sep | 18.6 °C | 18.6 °C | +0.0 |
| Oct | 13.7 °C | 13.7 °C | +0.0 |
| Nov | 8.1 °C | 8.1 °C | +0.0 |
| Déc | 6.9 °C | 6.9 °C | +0.0 |