| 2025年 | 2026年 | 平年値 | |
| 9-9 | 26.7 | 27 | 26.7 |
| 9-10 | 26.7 | 26.7 | 26.7 |
| 9-11 | 26.6 | 26.8 | 26.6 |
| 9-12 | 26.6 | 26.8 | 26.6 |
| 9-13 | 26.5 | 26.9 | 26.5 |
| 9-14 | 26.6 | 26.9 | 26.6 |
| 9-15 | 27.5 | 26.9 | 27.5 |
| 9-16 | 28.5 | 26.6 | 28.5 |
| 9-17 | 28.5 | 26.7 | 28.5 |
| 9-18 | 28.4 | 26.7 | 28.4 |
| 9-19 | 28.2 | 26.8 | 28.2 |
| 9-20 | 27 | 26.6 | 27 |
| 9-21 | 26.7 | 26.4 | 26.7 |
| 9-22 | 26.1 | 26.1 | 26.1 |
| 9-23 | 26 | --- | 26 |