| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2024-09-01 | 晴天 | 26°/15° | 0.0 mm |
| 2024-09-02 | 晴天 | 23°/16° | 2.1 mm |
| 2024-09-03 | 晴天 | 24°/14° | 0.0 mm |
| 2024-09-04 | 晴天 | 26°/12° | 0.0 mm |
| 2024-09-05 | 晴天 | 25°/15° | 1.9 mm |
| 2024-09-06 | 晴天 | 22°/12° | 14.3 mm |
| 2024-09-07 | 晴天 | 25°/11° | 0.0 mm |
| 2024-09-08 | 晴天 | 26°/14° | 0.0 mm |
| 2024-09-09 | 晴天 | 24°/13° | 0.3 mm |
| 2024-09-10 | 晴天 | 26°/12° | 0.4 mm |
| 2024-09-11 | 晴天 | 22°/15° | 6.7 mm |
| 2024-09-12 | 晴天 | 24°/13° | 0.0 mm |
| 2024-09-13 | 晴天 | 22°/11° | 2.0 mm |
| 2024-09-14 | 晴天 | 20°/8° | 5.8 mm |
| 2024-09-15 | 晴天 | 17°/9° | 22.2 mm |
| 2024-09-16 | 晴天 | 21°/8° | 0.0 mm |
| 2024-09-17 | 晴天 | 22°/13° | 2.1 mm |
| 2024-09-18 | 晴天 | 23°/11° | 0.0 mm |
| 2024-09-19 | 晴天 | 19°/10° | 0.3 mm |
| 2024-09-20 | 晴天 | 18°/11° | 3.2 mm |
| 2024-09-21 | 晴天 | 16°/7° | 0.1 mm |
| 2024-09-22 | 晴天 | 18°/5° | 0.0 mm |
| 2024-09-23 | 晴天 | 18°/6° | 0.0 mm |
| 2024-09-24 | 晴天 | 20°/7° | 0.0 mm |
| 2024-09-25 | 晴天 | 20°/8° | 0.0 mm |
| 2024-09-26 | 晴天 | 23°/10° | 4.5 mm |
| 2024-09-27 | 晴天 | 20°/14° | 10.3 mm |
| 2024-09-28 | 晴天 | 19°/10° | 0.6 mm |
| 2024-09-29 | 晴天 | 20°/8° | 0.0 mm |
| 2024-09-30 | 晴天 | 21°/11° | 0.0 mm |
2024年09月留萌市共记录 30 天，平均最高 21℃、最低 10℃，降水日 16 天。