| 2025年 | 2026年 | 平年値 | |
| 9-13 | 28.2 | 27.4 | 27.2 |
| 9-12 | --- | 27.3 | 27.1 |
| 9-11 | 27.2 | 27.1 | 26.8 |
| 9-10 | 27.2 | 26.9 | 26.9 |
| 9-9 | 27.3 | 27.4 | 26.7 |
| 9-8 | 27.5 | 27.6 | 26.7 |
| 9-7 | 28 | 27.6 | 26.9 |
| 9-6 | 28.5 | 27.7 | 27 |
| 9-5 | 27.8 | 27.9 | 27 |
| 9-4 | 28.7 | 27.9 | 27.2 |
| 9-3 | 29.4 | 28 | 27.2 |
| 9-2 | 29.3 | 28.2 | 27.2 |
| 9-1 | 28.8 | 28.1 | 27.2 |
| 8-31 | 28.8 | 28.3 | 27.2 |
| 8-30 | 28.5 | 28.2 | 27.2 |