Temperatuur — 2026
| Maand | Heerlen | Landgraaf | Verschil |
|---|---|---|---|
| Jan | 2.8 °C | – | – |
| Feb | 6.5 °C | – | – |
| Mrt | 8.6 °C | 5.9 °C | +2.7 |
| Apr | 9.4 °C | 9 °C | +0.4 |
| Mei | 15 °C | 15 °C | +0.0 |
| Jun | 20.2 °C | 20.2 °C | +0.0 |
| Jul | 21 °C | 21 °C | +0.0 |
| Aug |
| 20.4 °C |
| 20.4 °C |
| +0.0 |
| Sep | 18.4 °C | 18.2 °C | +0.2 |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |