Temperatuur — 2023
| Maand | Houffalize | Lierneux | Verschil |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mrt | 6.6 °C | 4.8 °C | +1.8 |
| Apr | 7.2 °C | 6.1 °C | +1.1 |
| Mei | 12.7 °C | 11.5 °C | +1.2 |
| Jun | 19.1 °C | 18 °C | +1.1 |
| Jul | 17.5 °C | 16.3 °C | +1.2 |
| Aug |
| 16.9 °C |
| 15.9 °C |
| +1.0 |
| Sep | 17.1 °C | 16.2 °C | +0.9 |
| Okt | 12 °C | 11.1 °C | +0.9 |
| Nov | 6 °C | 4.9 °C | +1.1 |
| Dec | 4.6 °C | 3.5 °C | +1.1 |