| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 晴天 | 20°/12° | 1.2 mm |
| 2023-12-02 | 晴天 | 21°/12° | 0.2 mm |
| 2023-12-03 | 晴天 | 16°/12° | 5.4 mm |
| 2023-12-04 | 晴天 | 16°/12° | 0.5 mm |
| 2023-12-05 | 晴天 | 15°/11° | 2.2 mm |
| 2023-12-06 | 晴天 | 13°/10° | 2.4 mm |
| 2023-12-07 | 晴天 | 15°/9° | 2.0 mm |
| 2023-12-08 | 晴天 | 20°/8° | 0.0 mm |
| 2023-12-09 | 晴天 | 21°/10° | 0.0 mm |
| 2023-12-10 | 晴天 | 13°/6° | 0.0 mm |
| 2023-12-11 | 晴天 | 12°/6° | 2.5 mm |
| 2023-12-12 | 晴天 | 16°/6° | 0.0 mm |
| 2023-12-13 | 晴天 | 15°/7° | 0.0 mm |
| 2023-12-14 | 晴天 | 14°/9° | 0.0 mm |
| 2023-12-15 | 晴天 | 18°/9° | 2.9 mm |
| 2023-12-16 | 晴天 | 17°/9° | 0.0 mm |
| 2023-12-17 | 晴天 | 18°/6° | 0.0 mm |
| 2023-12-18 | 晴天 | 17°/6° | 0.0 mm |
| 2023-12-19 | 晴天 | 17°/4° | 0.0 mm |
| 2023-12-20 | 晴天 | 18°/5° | 0.0 mm |
| 2023-12-21 | 晴天 | 17°/6° | 0.0 mm |
| 2023-12-22 | 晴天 | 17°/6° | 0.0 mm |
| 2023-12-23 | 晴天 | 20°/7° | 0.0 mm |
| 2023-12-24 | 晴天 | 19°/10° | 0.0 mm |
| 2023-12-25 | 晴天 | 18°/9° | 0.3 mm |
| 2023-12-26 | 晴天 | 14°/9° | 3.6 mm |
| 2023-12-27 | 晴天 | 17°/10° | 1.0 mm |
| 2023-12-28 | 晴天 | 17°/6° | 0.0 mm |
| 2023-12-29 | 晴天 | 15°/7° | 0.4 mm |
| 2023-12-30 | 晴天 | 16°/6° | 0.0 mm |
| 2023-12-31 | 晴天 | 19°/6° | 0.0 mm |
2023年12月科隆共记录 31 天，平均最高 16℃、最低 8℃，降水日 13 天。