| 2024年 | 2025年 | 平年値 | |
| 12-12 | 4 | 3.2 | 3 |
| 12-13 | 4.1 | 3.2 | 3 |
| 12-14 | --- | 3.2 | 3.1 |
| 12-15 | 3.9 | 3.3 | 3.1 |
| 12-16 | 4 | 3.3 | 3.3 |
| 12-17 | 4 | 3.5 | 3.3 |
| 12-18 | 4 | 3.4 | 3.3 |
| 12-19 | 4 | 3.4 | 3.2 |
| 12-20 | 4 | 3.5 | 3.2 |
| 12-21 | 3.9 | 3.5 | 3.2 |
| 12-22 | 3.9 | 3.6 | 3.2 |
| 12-23 | 3.9 | 3.5 | 2.9 |
| 12-24 | 3.6 | 3.7 | 3.5 |
| 12-25 | 3.6 | 3.7 | 3 |
| 12-26 | 3.7 | 3.7 | 2.5 |