| 2024年 | 2025年 | 平年値 | |
| 1-14 | 10.9 | 10.4 | 10.5 |
| 1-15 | 11.3 | 10.5 | 10.1 |
| 1-16 | 10.9 | 9.6 | 10 |
| 1-17 | 10.6 | 9.8 | 10.2 |
| 1-18 | --- | 9.1 | 10.5 |
| 1-19 | --- | 9.6 | 10.2 |
| 1-20 | --- | 10.2 | 10.5 |
| 1-21 | 11.1 | --- | 10.1 |
| 1-22 | 11.1 | 9.9 | 10 |
| 1-23 | 11.4 | 9.9 | 9.6 |
| 1-24 | 11.3 | 10.1 | 10.2 |
| 1-25 | 11.2 | 10.5 | 10 |
| 1-26 | 10.6 | 10.2 | 9.6 |
| 1-27 | 10 | 9.8 | 9.5 |
| 1-28 | 9.6 | 9.9 | 9.8 |