Temperatuur — 2024
| Maand | Kaag en Braassem | Alphen aan den Rijn | Verschil |
|---|---|---|---|
| Jan | – | 4 °C | – |
| Feb | – | 7.9 °C | – |
| Mrt | – | 8.5 °C | – |
| Apr | – | 10.3 °C | – |
| Mei | – | 15 °C | – |
| Jun | – | 15.2 °C | – |
| Jul | – | 17.5 °C | – |
| Aug | – | 19.2 °C | – |
| Sep |
| – |
| 15.9 °C |
| – |
| Okt | – | 12.2 °C | – |
| Nov | – | 7.3 °C | – |
| Dec | – | 6.4 °C | – |