Temperatuur — 2023
| Maand | Theux | Spa | Verschil |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mrt | 7.7 °C | 6.7 °C | +1.0 |
| Apr | 8.1 °C | 6.9 °C | +1.2 |
| Mei | 13.1 °C | 12.1 °C | +1.0 |
| Jun | 19.8 °C | 18.7 °C | +1.1 |
| Jul | 18.5 °C | 17.1 °C | +1.4 |
| Aug |
| 17.7 °C |
| 16.5 °C |
| +1.2 |
| Sep | 18.4 °C | 17.3 °C | +1.1 |
| Okt | 13.3 °C | 12.1 °C | +1.2 |
| Nov | 7.1 °C | 5.7 °C | +1.4 |
| Dec | 5.9 °C | 4.5 °C | +1.4 |