| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-04-01 | 中雨 | 15°/10° | 12.0 mm |
| 2026-04-02 | 中雨 | 15°/8° | 15.2 mm |
| 2026-04-03 | 多云 | 20°/9° | 0.0 mm |
| 2026-04-04 | 中阵雨 | 17°/13° | 7.3 mm |
| 2026-04-05 | 小雨 | 23°/14° | 2.2 mm |
| 2026-04-06 | 阴 | 24°/15° | 0.0 mm |
| 2026-04-07 | 阴 | 20°/11° | 0.0 mm |
| 2026-04-08 | 多云 | 18°/8° | 0.0 mm |
| 2026-04-09 | 阴 | 21°/12° | 0.0 mm |
| 2026-04-10 | 小毛毛雨 | 20°/16° | 0.4 mm |
| 2026-04-11 | 多云 | 28°/15° | 0.0 mm |
| 2026-04-12 | 阴 | 24°/16° | 0.0 mm |
| 2026-04-13 | 阴 | 25°/15° | 0.0 mm |
| 2026-04-14 | 阴 | 23°/16° | 0.0 mm |
| 2026-04-15 | 中阵雨 | 23°/15° | 25.9 mm |
| 2026-04-16 | 毛毛雨 | 24°/13° | 1.6 mm |
| 2026-04-17 | 阴 | 20°/11° | 0.0 mm |
| 2026-04-18 | 阴 | 22°/14° | 0.0 mm |
| 2026-04-19 | 阴 | 26°/16° | 0.0 mm |
| 2026-04-20 | 阴 | 25°/15° | 0.0 mm |
| 2026-04-21 | 小毛毛雨 | 24°/16° | 0.2 mm |
| 2026-04-22 | 阵雨 | 22°/14° | 3.0 mm |
| 2026-04-23 | 中阵雨 | 20°/13° | 17.1 mm |
| 2026-04-24 | 小雨 | 21°/12° | 3.9 mm |
| 2026-04-25 | 阴 | 18°/12° | 0.0 mm |
| 2026-04-26 | 阴 | 23°/12° | 0.0 mm |
| 2026-04-27 | 中阵雨 | 18°/14° | 27.0 mm |
| 2026-04-28 | 阴 | 24°/12° | 0.0 mm |
| 2026-04-29 | 大毛毛雨 | 18°/13° | 3.4 mm |
| 2026-04-30 | 毛毛雨 | 14°/12° | 1.6 mm |
2026年04月古河市共记录 30 天，平均最高 21℃、最低 13℃，降水日 14 天。