| 2024年 | 2025年 | 平年値 | |
| 12-13 | --- | 18.5 | 18.5 |
| 12-14 | --- | 18.6 | 19.1 |
| 12-15 | --- | 17.5 | 19 |
| 12-16 | --- | 17.7 | 17.9 |
| 12-17 | --- | 18.7 | 18.8 |
| 12-18 | --- | 18.6 | 17.2 |
| 12-19 | --- | 18 | 17.8 |
| 12-20 | --- | 18.8 | 17.8 |
| 12-21 | --- | 19.1 | 17.8 |
| 12-22 | --- | 18.3 | 17.9 |
| 12-23 | --- | 18 | 17.6 |
| 12-24 | --- | 17.9 | 17.1 |
| 12-25 | --- | 19.5 | 17.6 |
| 12-26 | --- | 17.8 | 17.6 |
| 12-27 | --- | 16.8 | 17.5 |