Neerslag — 2026
| Maand | Alkmaar | Heiloo | Verschil |
|---|---|---|---|
| Jan | 86.9 mm | – | – |
| Feb | 60.9 mm | – | – |
| Mrt | 30.2 mm | 5.6 mm | +24.6 |
| Apr | 1.9 mm | 2.3 mm | -0.4 |
| Mei | 38.6 mm | 49.5 mm | -10.9 |
| Jun | 86.8 mm | 100.9 mm | -14.1 |
| Jul | 15.9 mm | 16.8 mm | -0.9 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |