| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 阴 | 32°/23° | 0.0 mm |
| 2026-09-02 | 雾 | 36°/23° | 0.0 mm |
| 2026-09-03 | 阴 | 35°/22° | 0.0 mm |
| 2026-09-04 | 强阵雨 | 28°/24° | 27.3 mm |
| 2026-09-05 | 雾 | 30°/24° | 0.0 mm |
| 2026-09-06 | 阴 | 34°/23° | 0.0 mm |
| 2026-09-07 | 雾 | 34°/24° | 0.0 mm |
| 2026-09-08 | 阴 | 31°/22° | 0.0 mm |
| 2026-09-09 | 强阵雨 | 34°/22° | 10.1 mm |
| 2026-09-10 | 强阵雨 | 29°/23° | 17.6 mm |
| 2026-09-11 | 雾 | 32°/23° | 0.0 mm |
| 2026-09-12 | 阴 | 33°/21° | 0.0 mm |
| 2026-09-13 | 多云 | 34°/23° | 0.0 mm |
| 2026-09-14 | 毛毛雨 | 34°/22° | 0.7 mm |
| 2026-09-15 | 阴 | 35°/22° | 0.0 mm |
| 2026-09-16 | 多云 | 33°/23° | 0.0 mm |
| 2026-09-17 | 晴天 | 32°/22° | 0.0 mm |
| 2026-09-18 | 晴天 | 33°/19° | 0.0 mm |
| 2026-09-19 | 晴天 | 34°/20° | 0.0 mm |
| 2026-09-20 | 晴间多云 | 34°/22° | 0.0 mm |
| 2026-09-21 | 强阵雨 | 34°/24° | 32.1 mm |
| 2026-09-22 | 多云 | 33°/21° | 0.0 mm |
| 2026-09-23 | 多云 | 34°/22° | 0.0 mm |
| 2026-09-24 | 阴 | 31°/21° | 0.0 mm |
| 2026-09-25 | 多云 | 29°/19° | 0.0 mm |
| 2026-09-26 | 阴 | 30°/17° | 0.0 mm |
| 2026-09-27 | 阴 | 32°/18° | 0.0 mm |
| 2026-09-28 | 多云 | 32°/19° | 0.0 mm |
| 2026-09-29 | 晴间多云 | 32°/19° | 0.0 mm |
| 2026-09-30 | 晴间多云 | 32°/18° | 0.0 mm |
2026年09月华盛顿共记录 30 天，平均最高 32℃、最低 21℃，降水日 5 天。