| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-09-01 | 阴 | 24°/19° | 0.0 mm |
| 2025-09-02 | 雾 | 26°/17° | 0.0 mm |
| 2025-09-03 | 阴 | 28°/17° | 0.0 mm |
| 2025-09-04 | 雾 | 27°/17° | 0.0 mm |
| 2025-09-05 | 阴 | 22°/15° | 0.0 mm |
| 2025-09-06 | 中雨 | 24°/12° | 3.9 mm |
| 2025-09-07 | 阴 | 26°/10° | 0.0 mm |
| 2025-09-08 | 阴 | 26°/13° | 0.0 mm |
| 2025-09-09 | 阴 | 27°/14° | 0.0 mm |
| 2025-09-10 | 阴 | 29°/16° | 0.0 mm |
| 2025-09-11 | 晴间多云 | 31°/18° | 0.0 mm |
| 2025-09-12 | 晴天 | 32°/18° | 0.0 mm |
| 2025-09-13 | 阴 | 32°/19° | 0.0 mm |
| 2025-09-14 | 强阵雨 | 32°/19° | 9.0 mm |
| 2025-09-15 | 多云 | 32°/19° | 0.0 mm |
| 2025-09-16 | 小毛毛雨 | 33°/19° | 0.4 mm |
| 2025-09-17 | 阴 | 32°/18° | 0.0 mm |
| 2025-09-18 | 阴 | 30°/19° | 0.0 mm |
| 2025-09-19 | 雾 | 30°/17° | 0.0 mm |
| 2025-09-20 | 大雨 | 24°/18° | 42.2 mm |
| 2025-09-21 | 强阵雨 | 25°/18° | 15.9 mm |
| 2025-09-22 | 雾 | 28°/17° | 0.0 mm |
| 2025-09-23 | 阵雨 | 25°/20° | 37.5 mm |
| 2025-09-24 | 阴 | 22°/17° | 0.0 mm |
| 2025-09-25 | 雾 | 26°/14° | 0.0 mm |
| 2025-09-26 | 雾 | 27°/13° | 0.0 mm |
| 2025-09-27 | 多云 | 29°/13° | 0.0 mm |
| 2025-09-28 | 晴间多云 | 29°/15° | 0.0 mm |
| 2025-09-29 | 雾 | 28°/14° | 0.0 mm |
| 2025-09-30 | 阴 | 28°/14° | 0.0 mm |
2025年09月渥太华共记录 30 天，平均最高 27℃、最低 16℃，降水日 6 天。