| 2024年 | 2025年 | 平年値 | |
| 5-19 | --- | --- | 18 |
| 5-20 | --- | --- | 18 |
| 5-21 | --- | --- | 18 |
| 5-22 | --- | --- | 18.3 |
| 5-23 | --- | --- | 18.7 |
| 5-24 | --- | --- | 18.7 |
| 5-25 | --- | --- | 18.7 |
| 5-26 | --- | --- | 18.7 |
| 5-27 | --- | --- | 18.7 |
| 5-28 | --- | --- | 18.8 |
| 5-29 | --- | --- | 19.1 |
| 5-30 | --- | --- | 20.3 |
| 5-31 | --- | --- | 17.7 |
| 6-1 | --- | --- | |
| 6-2 | --- | --- |