| 2025年 | 2026年 | 平年値 | |
| 5-1 | 16.6 | 17.3 | 16.2 |
| 5-2 | 16.3 | 17.6 | 16.5 |
| 5-3 | 16.6 | 17.7 | 16.5 |
| 5-4 | 16.3 | 18.7 | 16.2 |
| 5-5 | 16.8 | 18.6 | 16.5 |
| 5-6 | 16.8 | 18.6 | 16.9 |
| 5-7 | 16.7 | 18.8 | 16.8 |
| 5-8 | 17.2 | 19 | 16.7 |
| 5-9 | 17.6 | 18.4 | 16.8 |
| 5-10 | 17.6 | 18.6 | 16.7 |
| 5-11 | 17 | 19 | 16.8 |
| 5-12 | 17.3 | 19.4 | 17.2 |
| 5-13 | 17.3 | 19.5 | 17.5 |
| 5-14 | 18.2 | 19.8 | 17.5 |
| 5-15 | 18.4 | 20 | 17.5 |