| 2024年 | 2025年 | 平年値 | |
| 12-4 | 16.8 | --- | 14.5 |
| 12-5 | 16.4 | --- | 15 |
| 12-6 | 16.2 | --- | 14.4 |
| 12-7 | 15.9 | --- | 15.2 |
| 12-8 | 16.1 | --- | 14.8 |
| 12-9 | 15.5 | --- | 14.6 |
| 12-10 | 15 | --- | 14.6 |
| 12-11 | 14.5 | --- | 15.2 |
| 12-12 | 14.3 | --- | 15.3 |
| 12-13 | 14 | --- | 15 |
| 12-14 | 13.7 | --- | 14.5 |
| 12-15 | 14.1 | --- | 14.9 |
| 12-16 | 13.9 | --- | 14.9 |
| 12-17 | 13.7 | --- | 14.9 |
| 12-18 | 13.8 | --- | 13.5 |