| 2025年 | 2026年 | 平年値 | |
| 1-3 | 12.8 | 13.3 | 13 |
| 1-4 | 12.3 | 13.2 | 13 |
| 1-5 | 12 | 13.2 | 12.7 |
| 1-6 | 12.2 | 12.8 | 12.8 |
| 1-7 | 11.9 | 12.9 | 12.7 |
| 1-8 | 12 | 12.6 | 12.7 |
| 1-9 | 12 | 12.3 | 12.5 |
| 1-10 | 11.6 | 12.4 | 12.5 |
| 1-11 | 11.5 | 12.3 | 12.5 |
| 1-12 | 11.8 | 11.6 | 12.2 |
| 1-13 | 11.6 | 11.8 | 12.1 |
| 1-14 | 11.4 | 11.3 | 11.9 |
| 1-15 | 11.4 | 11.3 | 11.8 |
| 1-16 | 11 | 11.5 | 11.6 |
| 1-17 | 11 | --- | 11.5 |