| 2025年 | 2026年 | 平年値 | |
| 6-15 | 19.5 | 21.1 | 19.5 |
| 6-16 | 19.8 | 21 | 19.8 |
| 6-17 | 20.2 | 21.2 | 20.2 |
| 6-18 | 20.4 | 21.3 | 20.4 |
| 6-19 | 20.7 | 21.3 | 20.7 |
| 6-20 | 20.3 | 21.3 | 20.3 |
| 6-21 | 19.8 | 21.6 | 19.8 |
| 6-22 | 20.3 | 21.9 | 20.3 |
| 6-23 | 20.8 | --- | 20.8 |
| 6-24 | 20.8 | 21.7 | 20.8 |
| 6-25 | 20.6 | 21.5 | 20.6 |
| 6-26 | 20.9 | 21.5 | 20.9 |
| 6-27 | 21 | 21.5 | 21 |
| 6-28 | 21.5 | 21.5 | 21.5 |
| 6-29 | 21.9 | --- | 21.9 |