| 2025年 | 2026年 | 平年値 | |
| 4-12 | 32.5 | 32.8 | 31.4 |
| 4-13 | 32.4 | 32.7 | 32 |
| 4-14 | 32.5 | 32.6 | 31.9 |
| 4-15 | 32.4 | 32.9 | 31.9 |
| 4-16 | 32.3 | 32.9 | 31.9 |
| 4-17 | 32.3 | 32.9 | 31.8 |
| 4-18 | 32.3 | 33 | 31.8 |
| 4-19 | 32.3 | 32.9 | 31.8 |
| 4-20 | 32.3 | 32.8 | 31.7 |
| 4-21 | 32.2 | 32.9 | 31.8 |
| 4-22 | 32.3 | --- | 31.7 |
| 4-23 | 32.3 | --- | 31.6 |
| 4-24 | 32.2 | --- | 31.6 |
| 4-25 | 32.2 | --- | 31.9 |
| 4-26 | 32.3 | --- | 31.7 |