| 2025年 | 2026年 | 平年値 | |
| 1-30 | 12 | --- | 13 |
| 1-31 | 12 | 12.5 | 12.6 |
| 2-1 | 12.5 | 13.2 | 12.6 |
| 2-2 | 12.4 | 13 | 12.6 |
| 2-3 | 12.4 | 12.7 | 12.3 |
| 2-4 | 10.5 | 12 | 12.5 |
| 2-5 | 10.8 | 12.4 | 12.8 |
| 2-6 | 11.8 | 14.2 | 12.3 |
| 2-7 | 12.6 | 13.9 | 12.6 |
| 2-8 | 12.2 | 13.6 | 12.6 |
| 2-9 | 12.4 | 11.2 | 11.5 |
| 2-10 | 12.5 | 11.4 | 12.4 |
| 2-11 | 11.7 | 12.2 | 11.6 |
| 2-12 | 11.4 | 11.7 | 12.3 |
| 2-13 | 11.4 | --- | 12.9 |