| 2025年 | 2026年 | 平年値 | |
| 5-4 | --- | 20.5 | 17.8 |
| 5-5 | --- | 20.3 | 18.8 |
| 5-6 | --- | 19.9 | 19.1 |
| 5-7 | --- | 20.3 | 19.6 |
| 5-8 | --- | 20.3 | 19.2 |
| 5-9 | --- | 20.3 | 17.7 |
| 5-10 | --- | --- | 17.1 |
| 5-11 | --- | --- | 18.1 |
| 5-12 | --- | --- | 19 |
| 5-13 | --- | 20.4 | 18.9 |
| 5-14 | --- | 20.1 | 17.8 |
| 5-15 | --- | 20.4 | 18.9 |
| 5-16 | --- | 20.8 | 19.4 |
| 5-17 | --- | 6 | 18 |
| 5-18 | --- | --- | 18.8 |