Neerslag — 2020
| Maand | Wassenaar | Voorschoten | Verschil |
|---|---|---|---|
| Jan | 82.7 mm | 50.7 mm | +32.0 |
| Feb | 136.9 mm | 117.9 mm | +19.0 |
| Mrt | 46.1 mm | 48.1 mm | -2.0 |
| Apr | 26 mm | 27.7 mm | -1.7 |
| Mei | 19.7 mm | 14.3 mm | +5.4 |
| Jun | 66 mm | 60.4 mm | +5.6 |
| Jul | 80.5 mm | 58 mm | +22.5 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |