| 2025年 | 2026年 | 平年値 | |
| 4-2 | 32.3 | 33 | 31.4 |
| 4-3 | 32.2 | 33 | 31.6 |
| 4-4 | 32.2 | 32.9 | 31.6 |
| 4-5 | 32.2 | 32.8 | 31.5 |
| 4-6 | 32.2 | 32.9 | 31.6 |
| 4-7 | 32.2 | 32.9 | 31.4 |
| 4-8 | 32.2 | 33 | 31.3 |
| 4-9 | 32.4 | 33 | 31.1 |
| 4-10 | 32.5 | 32.9 | 31.4 |
| 4-11 | 32.5 | 32.8 | 31.1 |
| 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 | --- | 31.9 |
| 4-16 | 32.3 | --- | 31.9 |