| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-04-01 | 阴 | 14°/5° | 0.0 mm |
| 2025-04-02 | 阴 | 18°/7° | 0.0 mm |
| 2025-04-03 | 阴 | 21°/10° | 0.0 mm |
| 2025-04-04 | 晴天 | 23°/10° | 0.0 mm |
| 2025-04-05 | 阴 | 20°/11° | 0.0 mm |
| 2025-04-06 | 多云 | 13°/4° | 0.0 mm |
| 2025-04-07 | 阴 | 14°/3° | 0.0 mm |
| 2025-04-08 | 阴 | 17°/6° | 0.0 mm |
| 2025-04-09 | 阴 | 17°/8° | 0.0 mm |
| 2025-04-10 | 阴 | 14°/6° | 0.0 mm |
| 2025-04-11 | 阴 | 18°/6° | 0.0 mm |
| 2025-04-12 | 阴 | 23°/9° | 0.0 mm |
| 2025-04-13 | 大毛毛雨 | 17°/12° | 6.7 mm |
| 2025-04-14 | 阴 | 21°/9° | 0.0 mm |
| 2025-04-15 | 毛毛雨 | 22°/11° | 2.1 mm |
| 2025-04-16 | 小雨 | 13°/9° | 4.1 mm |
| 2025-04-17 | 毛毛雨 | 9°/7° | 2.1 mm |
| 2025-04-18 | 阵雨 | 10°/7° | 6.0 mm |
| 2025-04-19 | 阴 | 17°/6° | 0.0 mm |
| 2025-04-20 | 雷阵雨 | 19°/8° | 11.7 mm |
| 2025-04-21 | 毛毛雨 | 17°/8° | 1.7 mm |
| 2025-04-22 | 小毛毛雨 | 18°/9° | 2.5 mm |
| 2025-04-23 | 毛毛雨 | 18°/10° | 2.4 mm |
| 2025-04-24 | 大毛毛雨 | 11°/9° | 11.9 mm |
| 2025-04-25 | 小毛毛雨 | 16°/9° | 1.3 mm |
| 2025-04-26 | 阴 | 19°/9° | 0.0 mm |
| 2025-04-27 | 阴 | 21°/9° | 0.0 mm |
| 2025-04-28 | 晴天 | 22°/11° | 0.0 mm |
| 2025-04-29 | 阴 | 25°/11° | 0.0 mm |
| 2025-04-30 | 阴 | 26°/13° | 0.0 mm |
2025年04月科隆共记录 30 天，平均最高 17℃、最低 8℃，降水日 11 天。