| 2025年 | 2026年 | 平年値 | |
| 1-15 | 34.5 | 34.3 | 34.4 |
| 1-16 | 34.5 | 34.3 | 34.3 |
| 1-17 | 34.5 | 34.3 | 34.2 |
| 1-18 | 34.5 | 34.3 | 34 |
| 1-19 | 34.4 | 34 | 34.1 |
| 1-20 | 34.4 | 34.4 | 34.1 |
| 1-21 | 34.4 | 34.4 | 34.2 |
| 1-22 | 34.4 | 34.5 | 34.2 |
| 1-23 | 34.3 | 34.4 | 34.2 |
| 1-24 | 34.5 | 34.3 | 34.2 |
| 1-25 | 34.4 | 34.4 | 34 |
| 1-26 | 33.7 | 34.4 | 34 |
| 1-27 | 34.3 | 34.3 | 33.8 |
| 1-28 | 34.4 | 34.4 | 34 |
| 1-29 | 34.4 | --- | 34 |