| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 晴间多云 | 37°/24° | 0.0 mm |
| 2026-09-02 | 晴间多云 | 38°/24° | 0.0 mm |
| 2026-09-03 | 晴间多云 | 37°/24° | 0.0 mm |
| 2026-09-04 | 晴间多云 | 37°/23° | 0.0 mm |
| 2026-09-05 | 多云 | 38°/24° | 0.0 mm |
| 2026-09-06 | 阴 | 38°/22° | 0.0 mm |
| 2026-09-07 | 晴间多云 | 38°/23° | 0.0 mm |
| 2026-09-08 | 晴间多云 | 38°/25° | 0.0 mm |
| 2026-09-09 | 阴 | 38°/26° | 0.0 mm |
| 2026-09-10 | 大雨 | 27°/20° | 47.6 mm |
| 2026-09-11 | 阴 | 32°/19° | 0.0 mm |
| 2026-09-12 | 阴 | 32°/21° | 0.0 mm |
| 2026-09-13 | 中雨 | 32°/20° | 10.1 mm |
| 2026-09-14 | 晴天 | 36°/23° | 0.0 mm |
| 2026-09-15 | 晴天 | 36°/24° | 0.0 mm |
| 2026-09-16 | 晴间多云 | 36°/22° | 0.0 mm |
| 2026-09-17 | 晴天 | 35°/23° | 0.0 mm |
| 2026-09-18 | 晴间多云 | 36°/23° | 0.0 mm |
| 2026-09-19 | 阴 | 35°/22° | 0.0 mm |
| 2026-09-20 | 阴 | 34°/21° | 0.0 mm |
| 2026-09-21 | 阴 | 26°/20° | 0.0 mm |
| 2026-09-22 | 阴 | 27°/18° | 0.0 mm |
| 2026-09-23 | 晴天 | 28°/16° | 0.0 mm |
| 2026-09-24 | 阴 | 28°/14° | 0.0 mm |
| 2026-09-25 | 阴 | 28°/16° | 0.0 mm |
| 2026-09-26 | 小雨 | 23°/19° | 1.4 mm |
| 2026-09-27 | 大雨 | 26°/19° | 44.4 mm |
| 2026-09-28 | 晴间多云 | 27°/18° | 0.0 mm |
| 2026-09-29 | 阴 | 27°/17° | 0.0 mm |
| 2026-09-30 | 阴 | 28°/20° | 0.0 mm |
2026年09月渥太华共记录 30 天，平均最高 32℃、最低 21℃，降水日 4 天。