| 2025年 | 2026年 | 平年値 | |
| 4-2 | 11 | 11.8 | 11 |
| 4-3 | 11.3 | 12 | 11.3 |
| 4-4 | 11.1 | 12.4 | 11.1 |
| 4-5 | 10.8 | 12.5 | 10.8 |
| 4-6 | 10.9 | 12.4 | 10.9 |
| 4-7 | 11.3 | 12.5 | 11.3 |
| 4-8 | 11.6 | 12.3 | 11.6 |
| 4-9 | 11.8 | 12.5 | 11.8 |
| 4-10 | 11.9 | 12.7 | 11.9 |
| 4-11 | 12 | 12.8 | 12 |
| 4-12 | 12.1 | --- | 12.1 |
| 4-13 | 12.2 | 13.2 | 12.2 |
| 4-14 | 12 | 13.4 | 12 |
| 4-15 | 12 | 13.5 | 12 |
| 4-16 | 12.1 | --- | 12.1 |