Temperatuur — 2025
| Maand | Alphen aan den Rijn | Waddinxveen | Verschil |
|---|---|---|---|
| Jan | 3.7 °C | 3.8 °C | -0.1 |
| Feb | 3.7 °C | 3.8 °C | -0.1 |
| Mrt | 6.8 °C | 6.9 °C | -0.1 |
| Apr | 10.9 °C | 11 °C | -0.1 |
| Mei | 13.8 °C | 13.6 °C | +0.2 |
| Jun | 17.8 °C | 17.7 °C | +0.1 |
| Jul | 18.5 °C | 18.5 °C | +0.0 |
| Aug |
| 18.2 °C |
| 18.2 °C |
| +0.0 |
| Sep | 15.1 °C | 15.2 °C | -0.1 |
| Okt | 12.2 °C | 12.3 °C | -0.1 |
| Nov | 7.9 °C | 8 °C | -0.1 |
| Dec | 6.1 °C | 6.2 °C | -0.1 |