| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-01-01 | 阴 | -6°/-20° | 0.0 mm |
| 2026-01-02 | 中雪 | -5°/-20° | 1.8 mm |
| 2026-01-03 | 小雪 | -3°/-19° | 0.8 mm |
| 2026-01-04 | 阴 | -2°/-21° | 0.0 mm |
| 2026-01-05 | 小雪 | -7°/-20° | 0.1 mm |
| 2026-01-06 | 阴 | -12°/-23° | 0.0 mm |
| 2026-01-07 | 小雪 | -3°/-23° | 0.2 mm |
| 2026-01-08 | 小雪 | -6°/-19° | 0.3 mm |
| 2026-01-09 | 中雪 | -12°/-19° | 1.5 mm |
| 2026-01-10 | 阴 | -11°/-28° | 0.0 mm |
| 2026-01-11 | 小阵雪 | -8°/-22° | 1.8 mm |
| 2026-01-12 | 阴 | -18°/-31° | 0.0 mm |
| 2026-01-13 | 中雪 | -8°/-25° | 1.3 mm |
| 2026-01-14 | 中雪 | -9°/-28° | 1.7 mm |
| 2026-01-15 | 阴 | -21°/-34° | 0.0 mm |
| 2026-01-16 | 阴 | -24°/-36° | 0.0 mm |
| 2026-01-17 | 雾 | -27°/-29° | 0.0 mm |
| 2026-01-18 | 雾 | -26°/-34° | 0.0 mm |
| 2026-01-19 | 阴 | -28°/-38° | 0.0 mm |
| 2026-01-20 | 多云 | -24°/-40° | 0.0 mm |
| 2026-01-21 | 阴 | -21°/-36° | 0.0 mm |
| 2026-01-22 | 多云 | -15°/-33° | 0.0 mm |
| 2026-01-23 | 阴 | -15°/-30° | 0.0 mm |
| 2026-01-24 | 阴 | -13°/-31° | 0.0 mm |
| 2026-01-25 | 小雪 | -14°/-17° | 1.6 mm |
| 2026-01-26 | 阴 | -14°/-28° | 0.0 mm |
| 2026-01-27 | 阴 | -15°/-32° | 0.0 mm |
| 2026-01-28 | 阴 | -11°/-29° | 0.0 mm |
| 2026-01-29 | 小雪 | -13°/-27° | 0.2 mm |
| 2026-01-30 | 阴 | -10°/-24° | 0.0 mm |
| 2026-01-31 | 小雪 | -7°/-17° | 0.5 mm |
2026年01月伊尔库茨克共记录 31 天，平均最高 -13℃、最低 -26℃，降水日 12 天。