| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 小雨 | 24°/16° | 5.8 mm |
| 2026-09-02 | 中阵雨 | 24°/16° | 6.8 mm |
| 2026-09-03 | 雾 | 26°/17° | 0.0 mm |
| 2026-09-04 | 阴 | 22°/15° | 0.0 mm |
| 2026-09-05 | 阴 | 21°/14° | 0.0 mm |
| 2026-09-06 | 阴 | 22°/13° | 0.0 mm |
| 2026-09-07 | 阴 | 24°/13° | 0.0 mm |
| 2026-09-08 | 大毛毛雨 | 22°/15° | 1.5 mm |
| 2026-09-09 | 大毛毛雨 | 21°/15° | 3.4 mm |
| 2026-09-10 | 阴 | 22°/13° | 0.0 mm |
| 2026-09-11 | 晴天 | 19°/8° | 0.0 mm |
| 2026-09-12 | 雾 | 24°/9° | 0.0 mm |
| 2026-09-13 | 小毛毛雨 | 26°/17° | 0.4 mm |
| 2026-09-14 | 多云 | 17°/8° | 0.0 mm |
| 2026-09-15 | 小毛毛雨 | 17°/5° | 0.8 mm |
| 2026-09-16 | 阴 | 24°/14° | 0.0 mm |
| 2026-09-17 | 晴间多云 | 21°/11° | 0.0 mm |
| 2026-09-18 | 多云 | 18°/9° | 0.0 mm |
| 2026-09-19 | 阴 | 17°/4° | 0.0 mm |
| 2026-09-20 | 晴间多云 | 19°/6° | 0.0 mm |
| 2026-09-21 | 阴 | 15°/7° | 0.0 mm |
| 2026-09-22 | 阴 | 17°/5° | 0.0 mm |
| 2026-09-23 | 晴间多云 | 19°/5° | 0.0 mm |
| 2026-09-24 | 晴天 | 20°/3° | 0.0 mm |
| 2026-09-25 | 阴 | 23°/4° | 0.0 mm |
| 2026-09-26 | 阴 | 23°/10° | 0.0 mm |
| 2026-09-27 | 阴 | 21°/12° | 0.0 mm |
| 2026-09-28 | 阴 | 17°/12° | 0.0 mm |
| 2026-09-29 | 雾 | 16°/9° | 0.0 mm |
| 2026-09-30 | 雾 | 21°/8° | 0.0 mm |
2026年09月渥太华共记录 30 天，平均最高 20℃、最低 10℃，降水日 6 天。