Temperatuur — 2025
| Maand | Leidschendam-Voorburg | Voorschoten | Verschil |
|---|---|---|---|
| Jan | 3.8 °C | – | – |
| Feb | 3.8 °C | – | – |
| Mrt | 6.8 °C | – | – |
| Apr | 11.1 °C | – | – |
| Mei | 13.9 °C | – | – |
| Jun | 18 °C | – | – |
| Jul | 18.7 °C | – | – |
| Aug | 18.4 °C | – | – |
| Sep |
| 15.2 °C |
| – |
| – |
| Okt | 12.4 °C | – | – |
| Nov | 8.1 °C | – | – |
| Dec | 6.2 °C | – | – |