| 2025年 | 2026年 | 平年値 | |
| 5-18 | --- | 5.8 | 18.8 |
| 5-19 | --- | 13.2 | 19.7 |
| 5-20 | --- | 15.1 | 18.5 |
| 5-21 | --- | --- | 19.2 |
| 5-22 | --- | --- | 19 |
| 5-23 | --- | 3 | 20.2 |
| 5-24 | --- | 37 | 19.6 |
| 5-25 | --- | 37 | 19.9 |
| 5-26 | --- | 37 | 19.3 |
| 5-27 | --- | 37 | 20.5 |
| 5-28 | --- | 37 | 21.5 |
| 5-29 | --- | 37 | 19 |
| 5-30 | --- | 37 | 19 |
| 5-31 | --- | 37 | 19.6 |
| 6-1 | --- | 37 | 18.8 |