| 2024年 | 2025年 | 平年値 | |
| 12-4 | --- | --- | 12.8 |
| 12-5 | --- | --- | 12 |
| 12-6 | --- | --- | 10.8 |
| 12-7 | --- | --- | 11.7 |
| 12-8 | --- | --- | 12.8 |
| 12-9 | --- | --- | 11.8 |
| 12-10 | --- | --- | 12.3 |
| 12-11 | --- | --- | 13.6 |
| 12-12 | 15.2 | --- | 10.6 |
| 12-13 | 15.5 | --- | 12.8 |
| 12-14 | 15.4 | --- | 10.2 |
| 12-15 | 14 | --- | 7.4 |
| 12-16 | 14.5 | --- | 8.9 |
| 12-17 | 13.8 | --- | 8.2 |
| 12-18 | 13.9 | --- | 4 |