| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-01-01 | 阴 | 10°/4° | 0.0 mm |
| 2026-01-02 | 大阵雪 | 6°/0° | 15.5 mm |
| 2026-01-03 | 阴 | 8°/2° | 0.0 mm |
| 2026-01-04 | 晴天 | 10°/4° | 0.0 mm |
| 2026-01-05 | 阴 | 10°/4° | 0.0 mm |
| 2026-01-06 | 阴 | 9°/4° | 0.0 mm |
| 2026-01-07 | 小毛毛雨 | 5°/3° | 0.4 mm |
| 2026-01-08 | 阴 | 10°/2° | 0.0 mm |
| 2026-01-09 | 阴 | 8°/2° | 0.0 mm |
| 2026-01-10 | 阴 | 11°/3° | 0.0 mm |
| 2026-01-11 | 阴 | 12°/3° | 0.0 mm |
| 2026-01-12 | 阴 | 8°/2° | 0.0 mm |
| 2026-01-13 | 多云 | 14°/2° | 0.0 mm |
| 2026-01-14 | 多云 | 10°/5° | 0.0 mm |
| 2026-01-15 | 阴 | 10°/3° | 0.0 mm |
| 2026-01-16 | 晴天 | 15°/6° | 0.0 mm |
| 2026-01-17 | 阴 | 14°/6° | 0.0 mm |
| 2026-01-18 | 阴 | 11°/5° | 0.0 mm |
| 2026-01-19 | 阴 | 11°/6° | 0.0 mm |
| 2026-01-20 | 阴 | 9°/4° | 0.0 mm |
| 2026-01-21 | 小毛毛雨 | 6°/2° | 0.4 mm |
| 2026-01-22 | 小毛毛雨 | 5°/1° | 0.3 mm |
| 2026-01-23 | 阴 | 7°/0° | 0.0 mm |
| 2026-01-24 | 阴 | 9°/1° | 0.0 mm |
| 2026-01-25 | 阴 | 5°/1° | 0.0 mm |
| 2026-01-26 | 阴 | 7°/1° | 0.0 mm |
| 2026-01-27 | 阴 | 8°/2° | 0.0 mm |
| 2026-01-28 | 阴 | 9°/2° | 0.0 mm |
| 2026-01-29 | 小雪 | 8°/2° | 0.1 mm |
| 2026-01-30 | 阴 | 7°/1° | 0.0 mm |
| 2026-01-31 | 阴 | 8°/2° | 0.0 mm |
2026年01月古河市共记录 31 天，平均最高 9℃、最低 2℃，降水日 5 天。