| 2025年 | 2026年 | 平年値 | |
| 9-9 | 30.4 | 0 | 29.5 |
| 9-10 | 29.7 | 0 | 29.7 |
| 9-11 | --- | 0 | 29.3 |
| 9-12 | --- | 0 | 28.9 |
| 9-13 | 29.9 | 0 | 29.9 |
| 9-14 | 29.9 | --- | 29.9 |
| 9-15 | 30.6 | --- | 29.8 |
| 9-16 | 31.5 | --- | 30.6 |
| 9-17 | 30.8 | --- | 29.9 |
| 9-18 | 29.4 | --- | 28.8 |
| 9-19 | 27 | --- | 27.9 |
| 9-20 | 28.2 | --- | 28.1 |
| 9-21 | 27.2 | --- | 27.2 |
| 9-22 | 25.6 | --- | 25.6 |
| 9-23 | 25.6 | --- | 25.6 |