| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-10-01 | 大雪 | 2°/0° | 10.9 mm |
| 2025-10-02 | 中雪 | 5°/0° | 9.9 mm |
| 2025-10-03 | 阴 | 7°/-4° | 0.0 mm |
| 2025-10-04 | 阴 | 9°/0° | 0.0 mm |
| 2025-10-05 | 中雪 | 6°/1° | 1.9 mm |
| 2025-10-06 | 大雪 | 2°/-3° | 9.1 mm |
| 2025-10-07 | 阴 | 6°/-5° | 0.0 mm |
| 2025-10-08 | 阴 | 5°/-2° | 0.0 mm |
| 2025-10-09 | 阴 | 3°/-2° | 0.0 mm |
| 2025-10-10 | 阴 | 2°/-2° | 0.0 mm |
| 2025-10-11 | 阴 | 1°/-3° | 0.0 mm |
| 2025-10-12 | 阴 | -1°/-4° | 0.0 mm |
| 2025-10-13 | 阴 | 1°/-6° | 0.0 mm |
| 2025-10-14 | 阴 | -1°/-5° | 0.0 mm |
| 2025-10-15 | 阴 | -2°/-7° | 0.0 mm |
| 2025-10-16 | 小毛毛雨 | -2°/-6° | 0.1 mm |
| 2025-10-17 | 阴 | 0°/-6° | 0.0 mm |
| 2025-10-18 | 阴 | 0°/-6° | 0.0 mm |
| 2025-10-19 | 晴天 | 1°/-6° | 0.0 mm |
| 2025-10-20 | 晴天 | 4°/-6° | 0.0 mm |
| 2025-10-21 | 晴天 | 4°/-3° | 0.0 mm |
| 2025-10-22 | 阴 | 5°/-3° | 0.0 mm |
| 2025-10-23 | 阴 | 5°/-1° | 0.0 mm |
| 2025-10-24 | 中雪 | 2°/-2° | 0.9 mm |
| 2025-10-25 | 阴 | 0°/-4° | 0.0 mm |
| 2025-10-26 | 晴间多云 | 3°/-6° | 0.0 mm |
| 2025-10-27 | 阴 | 4°/-3° | 0.0 mm |
| 2025-10-28 | 小雪 | 2°/-3° | 0.6 mm |
| 2025-10-29 | 小雪 | 4°/-1° | 0.3 mm |
| 2025-10-30 | 阴 | 4°/-1° | 0.0 mm |
| 2025-10-31 | 毛毛雨 | 3°/1° | 5.8 mm |
2025年10月伊尔库茨克共记录 31 天，平均最高 2℃、最低 -3℃，降水日 9 天。