Temperatuur — 2026
| Month | Heumen | Nijmegen | Difference |
|---|---|---|---|
| Jan | – | 2 °C | – |
| Feb | – | 5.7 °C | – |
| Mar | 6.3 °C | 8.5 °C | -2.2 |
| Apr | 8.8 °C | 9.8 °C | -1.0 |
| May | 14.8 °C | 14.8 °C | +0.0 |
| Jun | 19.8 °C | 19.8 °C | +0.0 |
| Jul | 20.3 °C | 20.3 °C | +0.0 |
| Aug |
| 19.5 °C |
| 19.5 °C |
| +0.0 |
| Sep | 17.1 °C | 17.8 °C | -0.7 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |