| 2025年 | 2026年 | 平年値 | |
| 5-11 | --- | 21.3 | 19.3 |
| 5-12 | --- | 21.5 | 19.3 |
| 5-13 | --- | 22 | 19.6 |
| 5-14 | --- | 21.8 | 19.3 |
| 5-15 | --- | 21.6 | 19.1 |
| 5-16 | --- | 22.2 | 19.6 |
| 5-17 | --- | 22.7 | 20 |
| 5-18 | --- | 22.6 | 20.1 |
| 5-19 | --- | 22.8 | 19.7 |
| 5-20 | --- | 22.3 | 19.6 |
| 5-21 | --- | 21.9 | 19.6 |
| 5-22 | --- | 22 | 20.3 |
| 5-23 | --- | 22.2 | 21.3 |
| 5-24 | --- | 21.2 | 21.2 |
| 5-25 | --- | --- | 21.9 |