| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 小雪 | -8°/-15° | 0.0 mm |
| 2023-12-02 | 中雪 | -5°/-14° | 0.7 mm |
| 2023-12-03 | 小雪 | -4°/-12° | 1.1 mm |
| 2023-12-04 | 中雪 | 0°/-12° | 0.6 mm |
| 2023-12-05 | 小雪 | -4°/-18° | 0.2 mm |
| 2023-12-06 | 阴 | -12°/-19° | 0.6 mm |
| 2023-12-07 | 小雪 | -11°/-20° | 0.4 mm |
| 2023-12-08 | 阴 | -20°/-27° | 0.0 mm |
| 2023-12-09 | 阴 | -23°/-29° | 0.0 mm |
| 2023-12-10 | 阴 | -23°/-30° | 0.0 mm |
| 2023-12-11 | 阴 | -24°/-32° | 0.0 mm |
| 2023-12-12 | 阴 | -26°/-33° | 0.0 mm |
| 2023-12-13 | 阴 | -25°/-32° | 0.0 mm |
| 2023-12-14 | 阴 | -25°/-32° | 0.0 mm |
| 2023-12-15 | 阴 | -23°/-31° | 0.0 mm |
| 2023-12-16 | 阴 | -18°/-27° | 0.0 mm |
| 2023-12-17 | 阴 | -16°/-23° | 0.2 mm |
| 2023-12-18 | 阴 | -17°/-22° | 0.0 mm |
| 2023-12-19 | 阴 | -22°/-29° | 0.0 mm |
| 2023-12-20 | 多云 | -20°/-31° | 0.0 mm |
| 2023-12-21 | 阴 | -14°/-25° | 0.0 mm |
| 2023-12-22 | 阴 | -16°/-26° | 0.0 mm |
| 2023-12-23 | 小雪 | -9°/-23° | 1.2 mm |
| 2023-12-24 | 小雪 | -4°/-15° | 0.1 mm |
| 2023-12-25 | 小雪 | -5°/-16° | 1.9 mm |
| 2023-12-26 | 阴 | -6°/-19° | 0.0 mm |
| 2023-12-27 | 阴 | -5°/-15° | 0.0 mm |
| 2023-12-28 | 小雪 | -3°/-13° | 0.0 mm |
| 2023-12-29 | 小雪 | -3°/-10° | 2.0 mm |
| 2023-12-30 | 阴 | -3°/-12° | 0.0 mm |
| 2023-12-31 | 小雪 | -6°/-17° | 0.8 mm |
2023年12月伊尔库茨克共记录 31 天，平均最高 -12℃、最低 -21℃，降水日 14 天。