| 2025年 | 2026年 | 平年値 | |
| 1-5 | 16.7 | --- | 16.2 |
| 1-6 | 17 | --- | 15.9 |
| 1-7 | 16.8 | --- | 16.2 |
| 1-8 | 16.1 | --- | 16.3 |
| 1-9 | 16.8 | --- | 16.6 |
| 1-10 | 16 | --- | 14.3 |
| 1-11 | 16 | --- | 13.8 |
| 1-12 | 16.5 | --- | 13.1 |
| 1-13 | 17 | --- | 13.5 |
| 1-14 | 17.1 | --- | 14.1 |
| 1-15 | 17.9 | --- | 14.9 |
| 1-16 | 17.2 | --- | 16 |
| 1-17 | 17 | 16.6 | 16.5 |
| 1-18 | 15.8 | 16.6 | 16 |
| 1-19 | 16.8 | --- | 15.5 |