| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-01-01 | 小雪 | -9°/-18° | 1.6 mm |
| 2025-01-02 | 阴 | -9°/-24° | 0.0 mm |
| 2025-01-03 | 阴 | -13°/-28° | 0.0 mm |
| 2025-01-04 | 阴 | -8°/-20° | 0.0 mm |
| 2025-01-05 | 小雪 | -3°/-14° | 1.0 mm |
| 2025-01-06 | 中雪 | -3°/-14° | 2.4 mm |
| 2025-01-07 | 小雪 | -7°/-27° | 1.9 mm |
| 2025-01-08 | 晴天 | -7°/-27° | 0.0 mm |
| 2025-01-09 | 小雪 | -11°/-26° | 0.3 mm |
| 2025-01-10 | 小雪 | -10°/-20° | 1.3 mm |
| 2025-01-11 | 阴 | -7°/-25° | 0.0 mm |
| 2025-01-12 | 小雪 | -4°/-13° | 0.4 mm |
| 2025-01-13 | 小毛毛雨 | -8°/-17° | 0.1 mm |
| 2025-01-14 | 阴 | -6°/-20° | 0.0 mm |
| 2025-01-15 | 阴 | -3°/-16° | 0.0 mm |
| 2025-01-16 | 阴 | -4°/-18° | 0.0 mm |
| 2025-01-17 | 阴 | -4°/-21° | 0.0 mm |
| 2025-01-18 | 阴 | -1°/-20° | 0.0 mm |
| 2025-01-19 | 中雪 | -3°/-17° | 3.0 mm |
| 2025-01-20 | 阴 | -5°/-20° | 0.0 mm |
| 2025-01-21 | 阴 | -3°/-22° | 0.0 mm |
| 2025-01-22 | 阴 | -4°/-16° | 0.0 mm |
| 2025-01-23 | 中雪 | -4°/-10° | 1.1 mm |
| 2025-01-24 | 中雪 | -7°/-13° | 4.7 mm |
| 2025-01-25 | 小雪 | -14°/-32° | 0.5 mm |
| 2025-01-26 | 阴 | -17°/-34° | 0.0 mm |
| 2025-01-27 | 雾 | -12°/-29° | 0.0 mm |
| 2025-01-28 | 小雪 | -13°/-29° | 1.3 mm |
| 2025-01-29 | 阴 | -13°/-32° | 0.0 mm |
| 2025-01-30 | 阴 | -16°/-29° | 0.0 mm |
| 2025-01-31 | 阴 | -16°/-29° | 0.0 mm |
2025年01月伊尔库茨克共记录 31 天，平均最高 -7℃、最低 -21℃，降水日 13 天。