| 2025年 | 2026年 | 平年値 | |
| 8-30 | 25.2 | 28.8 | 27.5 |
| 8-31 | 25.6 | 28.8 | 27.7 |
| 9-1 | 26.3 | 29.2 | 27.8 |
| 9-2 | 25.5 | 28.7 | 27.5 |
| 9-3 | 26.1 | 29 | 27.6 |
| 9-4 | --- | 28.9 | 27.5 |
| 9-5 | --- | 28.7 | 27.5 |
| 9-6 | --- | 28.5 | 27.5 |
| 9-7 | --- | 28.4 | 27.4 |
| 9-8 | --- | 28.3 | 27.2 |
| 9-9 | --- | 28.1 | 27.2 |
| 9-10 | --- | 27.8 | 27.3 |
| 9-11 | --- | 28.2 | 27.5 |
| 9-12 | --- | 28.3 | 27.6 |
| 9-13 | --- | 28.1 | 27.5 |