Temperatuur — 2026
| Monat | Altena | Gorinchem | Unterschied |
|---|---|---|---|
| Jan | – | 2.6 °C | – |
| Feb | – | 6 °C | – |
| Mär | 6.9 °C | 8.3 °C | -1.4 |
| Apr | 9.1 °C | 9.8 °C | -0.7 |
| Mai | 14.9 °C | 14.9 °C | +0.0 |
| Jun | 19.5 °C | 19.5 °C | +0.0 |
| Jul | 19.9 °C | 20.1 °C | -0.2 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dez | – | – | – |