| 2025年 | 2026年 | 平年値 | |
| 4-16 | 17.3 | --- | 17.3 |
| 4-15 | 17.8 | --- | 17.8 |
| 4-14 | 18 | --- | 18 |
| 4-13 | 17.7 | --- | 17.7 |
| 4-12 | 17.4 | --- | 17.4 |
| 4-11 | 17.2 | --- | 17.2 |
| 4-10 | 17.9 | --- | 17.9 |
| 4-9 | 17.3 | --- | 17.3 |
| 4-8 | 17.5 | --- | 17.5 |
| 4-7 | 17.5 | --- | 17.5 |
| 4-6 | 17 | --- | 17 |
| 4-5 | 16.6 | --- | 16.6 |
| 4-4 | 16.7 | --- | 16.7 |
| 4-3 | 15.5 | --- | 15.5 |
| 4-2 | --- | --- |