Temperatuur — 2023
| Monat | Harderwijk | Ermelo | Unterschied |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mär | 8.7 °C | 9.3 °C | -0.6 |
| Apr | 8.3 °C | 8.3 °C | +0.0 |
| Mai | 13 °C | 13.1 °C | -0.1 |
| Jun | 19.3 °C | 19.4 °C | -0.1 |
| Jul | 18 °C | 18 °C | +0.0 |
| Aug |
| 17.5 °C |
| 17.5 °C |
| +0.0 |
| Sep | 18 °C | 18 °C | +0.0 |
| Okt | 13.1 °C | 13.1 °C | +0.0 |
| Nov | 7.3 °C | 7.3 °C | +0.0 |
| Dez | 6.1 °C | 6 °C | +0.1 |