| Stations: 14 | Temp. |
| Aberdaron (94 m) | 5.5 °C |
| Aberporth (134 m) | 6.6 °C |
| Capel Curig (215 m) | 5.0 °C |
| Cardiff Airport (67 m) | 5 °C |
| Lake Vyrnwy (359 m) | 3.7 °C |
| Milford Haven (32 m) | 5.9 °C |
| Mumbles (32 m) | 6.5 °C |
| Pembrey Burrows (6 m) | 3.6 °C |
| Raf Mona (62 m) | 3.9 °C |
| Rhyl (76 m) | 4.6 °C |
| Sennybridge (307 m) | 2.7 °C |
| St Athan (49 m) | 5.5 °C |
| Trawscoed (62 m) | 0.1 °C |
| Valley (10 m) | 4.3 °C |