| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 小毛毛雨 | 29°/24° | 1.5 mm |
| 2026-09-02 | 小毛毛雨 | 32°/25° | 0.9 mm |
| 2026-09-03 | 雷阵雨 | 32°/25° | 6.6 mm |
| 2026-09-04 | 阵雨 | 28°/23° | 6.3 mm |
| 2026-09-05 | 中阵雨 | 26°/21° | 31.2 mm |
| 2026-09-06 | 中阵雨 | 22°/20° | 65.3 mm |
| 2026-09-07 | 强阵雨 | 23°/21° | 182.1 mm |
| 2026-09-08 | 雷阵雨 | 31°/22° | 2.7 mm |
| 2026-09-09 | 强阵雨 | 33°/21° | 23.8 mm |
| 2026-09-10 | 强阵雨 | 21°/19° | 21.6 mm |
| 2026-09-11 | 中阵雨 | 21°/18° | 27.6 mm |
| 2026-09-12 | 阵雨 | 22°/20° | 6.6 mm |
| 2026-09-13 | 小毛毛雨 | 27°/21° | 0.2 mm |
| 2026-09-14 | 大毛毛雨 | 32°/23° | 2.3 mm |
| 2026-09-15 | 强阵雨 | 26°/21° | 34.3 mm |
| 2026-09-16 | 强阵雨 | 22°/19° | 59.0 mm |
| 2026-09-17 | 中阵雨 | 24°/19° | 16.2 mm |
| 2026-09-18 | 阴 | 25°/19° | 0.0 mm |
| 2026-09-19 | 小毛毛雨 | 26°/21° | 0.4 mm |
| 2026-09-20 | 强阵雨 | 23°/21° | 50.0 mm |
| 2026-09-21 | 强阵雨 | 26°/21° | 65.9 mm |
| 2026-09-22 | 小毛毛雨 | 30°/25° | 0.1 mm |
| 2026-09-23 | 小毛毛雨 | 24°/20° | 0.7 mm |
| 2026-09-24 | 小毛毛雨 | 29°/20° | 1.0 mm |
| 2026-09-25 | 毛毛雨 | 28°/23° | 1.8 mm |
| 2026-09-26 | 阵雨 | 23°/18° | 16.8 mm |
| 2026-09-27 | 阴 | 24°/18° | 0.0 mm |
| 2026-09-28 | 毛毛雨 | 23°/21° | 2.7 mm |
| 2026-09-29 | 中阵雨 | 22°/18° | 30.9 mm |
| 2026-09-30 | 中雨 | 21°/17° | 8.3 mm |
2026年09月西东京市共记录 30 天，平均最高 25℃、最低 20℃，降水日 28 天。