| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-09-01 | 多云 | 24°/14° | 0.0 mm |
| 2025-09-02 | 多云 | 25°/14° | 0.0 mm |
| 2025-09-03 | 小毛毛雨 | 20°/14° | 0.4 mm |
| 2025-09-04 | 阴 | 18°/9° | 0.0 mm |
| 2025-09-05 | 阴 | 19°/12° | 0.0 mm |
| 2025-09-06 | 阴 | 19°/8° | 0.0 mm |
| 2025-09-07 | 阴 | 19°/7° | 0.0 mm |
| 2025-09-08 | 晴天 | 22°/8° | 0.0 mm |
| 2025-09-09 | 阴 | 24°/9° | 0.0 mm |
| 2025-09-10 | 阴 | 27°/15° | 0.0 mm |
| 2025-09-11 | 多云 | 25°/17° | 0.0 mm |
| 2025-09-12 | 多云 | 28°/16° | 0.0 mm |
| 2025-09-13 | 毛毛雨 | 25°/18° | 0.7 mm |
| 2025-09-14 | 多云 | 27°/17° | 0.0 mm |
| 2025-09-15 | 晴天 | 27°/16° | 0.0 mm |
| 2025-09-16 | 晴间多云 | 26°/16° | 0.0 mm |
| 2025-09-17 | 阴 | 27°/15° | 0.0 mm |
| 2025-09-18 | 阴 | 29°/16° | 0.0 mm |
| 2025-09-19 | 阴 | 31°/18° | 0.0 mm |
| 2025-09-20 | 中雨 | 26°/19° | 2.9 mm |
| 2025-09-21 | 大雨 | 27°/19° | 12.3 mm |
| 2025-09-22 | 阴 | 27°/18° | 0.0 mm |
| 2025-09-23 | 大毛毛雨 | 24°/19° | 1.1 mm |
| 2025-09-24 | 雾 | 22°/16° | 0.0 mm |
| 2025-09-25 | 阴 | 23°/15° | 0.0 mm |
| 2025-09-26 | 阴 | 27°/14° | 0.0 mm |
| 2025-09-27 | 晴间多云 | 30°/16° | 0.0 mm |
| 2025-09-28 | 晴间多云 | 26°/16° | 0.0 mm |
| 2025-09-29 | 多云 | 30°/15° | 0.0 mm |
| 2025-09-30 | 阴 | 26°/16° | 0.0 mm |
2025年09月芝加哥共记录 30 天，平均最高 25℃、最低 14℃，降水日 5 天。