| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 小毛毛雨 | 24°/12° | 0.1 mm |
| 2026-09-02 | 小毛毛雨 | 19°/9° | 0.5 mm |
| 2026-09-03 | 阴 | 13°/5° | 0.0 mm |
| 2026-09-04 | 多云 | 13°/2° | 0.0 mm |
| 2026-09-05 | 阴 | 13°/5° | 0.0 mm |
| 2026-09-06 | 阴 | 14°/4° | 0.0 mm |
| 2026-09-07 | 阴 | 15°/5° | 0.0 mm |
| 2026-09-08 | 阴 | 17°/8° | 0.0 mm |
| 2026-09-09 | 晴天 | 17°/6° | 0.0 mm |
| 2026-09-10 | 阴 | 18°/8° | 0.0 mm |
| 2026-09-11 | 阴 | 18°/9° | 0.0 mm |
| 2026-09-12 | 晴天 | 18°/8° | 0.0 mm |
| 2026-09-13 | 晴天 | 20°/8° | 0.0 mm |
| 2026-09-14 | 阴 | 21°/11° | 0.0 mm |
| 2026-09-15 | 阴 | 21°/12° | 0.0 mm |
| 2026-09-16 | 阴 | 19°/8° | 0.0 mm |
| 2026-09-17 | 阴 | 13°/5° | 0.0 mm |
| 2026-09-18 | 晴天 | 11°/3° | 0.0 mm |
| 2026-09-19 | 阴 | 16°/5° | 0.0 mm |
| 2026-09-20 | 阴 | 18°/8° | 0.0 mm |
| 2026-09-21 | 阴 | 18°/9° | 0.0 mm |
| 2026-09-22 | 阴 | 14°/6° | 0.0 mm |
| 2026-09-23 | 大毛毛雨 | 11°/6° | 2.2 mm |
| 2026-09-24 | 小毛毛雨 | 12°/4° | 0.7 mm |
| 2026-09-25 | 小毛毛雨 | 10°/4° | 0.3 mm |
| 2026-09-26 | 阴 | 9°/3° | 0.0 mm |
| 2026-09-27 | 中雪 | 12°/1° | 0.6 mm |
| 2026-09-28 | 阴 | 1°/-3° | 0.0 mm |
| 2026-09-29 | 晴天 | 1°/-5° | 0.0 mm |
| 2026-09-30 | 晴天 | 6°/-3° | 0.0 mm |
2026年09月蒙古共记录 30 天，平均最高 14℃、最低 5℃，降水日 6 天。