| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2024-09-01 | 小毛毛雨 | 23°/15° | 0.2 mm |
| 2024-09-02 | 毛毛雨 | 21°/16° | 5.4 mm |
| 2024-09-03 | 阴 | 23°/14° | 0.0 mm |
| 2024-09-04 | 阴 | 25°/12° | 0.0 mm |
| 2024-09-05 | 小毛毛雨 | 24°/15° | 7.1 mm |
| 2024-09-06 | 中雨 | 20°/12° | 20.1 mm |
| 2024-09-07 | 阴 | 22°/12° | 0.0 mm |
| 2024-09-08 | 毛毛雨 | 23°/14° | 6.0 mm |
| 2024-09-09 | 小毛毛雨 | 22°/12° | 1.9 mm |
| 2024-09-10 | 阴 | 25°/12° | 0.7 mm |
| 2024-09-11 | 中雨 | 21°/15° | 16.7 mm |
| 2024-09-12 | 阴 | 22°/13° | 0.0 mm |
| 2024-09-13 | 毛毛雨 | 19°/10° | 4.2 mm |
| 2024-09-14 | 小雨 | 19°/8° | 13.2 mm |
| 2024-09-15 | 大雨 | 17°/9° | 26.3 mm |
| 2024-09-16 | 阴 | 21°/8° | 0.0 mm |
| 2024-09-17 | 小雨 | 18°/13° | 3.4 mm |
| 2024-09-18 | 阴 | 21°/12° | 0.0 mm |
| 2024-09-19 | 小毛毛雨 | 18°/10° | 0.7 mm |
| 2024-09-20 | 中雨 | 17°/10° | 3.6 mm |
| 2024-09-21 | 阴 | 14°/5° | 0.1 mm |
| 2024-09-22 | 阴 | 17°/5° | 0.0 mm |
| 2024-09-23 | 多云 | 16°/6° | 0.0 mm |
| 2024-09-24 | 阴 | 18°/6° | 0.0 mm |
| 2024-09-25 | 阴 | 18°/8° | 0.0 mm |
| 2024-09-26 | 阴 | 22°/9° | 0.5 mm |
| 2024-09-27 | 大雨 | 19°/13° | 12.9 mm |
| 2024-09-28 | 阴 | 17°/9° | 0.4 mm |
| 2024-09-29 | 晴天 | 20°/8° | 0.0 mm |
| 2024-09-30 | 阴 | 20°/10° | 0.0 mm |
2024年09月留萌郡共记录 30 天，平均最高 20℃、最低 10℃，降水日 18 天。