| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 晴间多云 | 35°/23° | 0.0 mm |
| 2026-09-02 | 阴 | 35°/23° | 0.0 mm |
| 2026-09-03 | 阴 | 35°/23° | 0.0 mm |
| 2026-09-04 | 中阵雨 | 35°/23° | 2.9 mm |
| 2026-09-05 | 小毛毛雨 | 38°/23° | 0.4 mm |
| 2026-09-06 | 大毛毛雨 | 37°/24° | 1.1 mm |
| 2026-09-07 | 阴 | 39°/23° | 0.0 mm |
| 2026-09-08 | 阴 | 36°/23° | 0.0 mm |
| 2026-09-09 | 晴间多云 | 35°/22° | 0.0 mm |
| 2026-09-10 | 多云 | 36°/22° | 0.0 mm |
| 2026-09-11 | 阴 | 33°/25° | 0.0 mm |
| 2026-09-12 | 阴 | 36°/24° | 0.0 mm |
| 2026-09-13 | 阴 | 37°/24° | 0.0 mm |
| 2026-09-14 | 阴 | 37°/23° | 0.0 mm |
| 2026-09-15 | 多云 | 37°/22° | 0.0 mm |
| 2026-09-16 | 晴间多云 | 36°/22° | 0.0 mm |
| 2026-09-17 | 晴间多云 | 36°/21° | 0.0 mm |
| 2026-09-18 | 晴天 | 36°/21° | 0.0 mm |
| 2026-09-19 | 晴天 | 37°/21° | 0.0 mm |
| 2026-09-20 | 多云 | 36°/24° | 0.0 mm |
| 2026-09-21 | 晴间多云 | 36°/24° | 0.0 mm |
| 2026-09-22 | 小毛毛雨 | 35°/22° | 0.4 mm |
| 2026-09-23 | 阴 | 32°/20° | 0.0 mm |
| 2026-09-24 | 多云 | 28°/15° | 0.0 mm |
| 2026-09-25 | 阴 | 31°/16° | 0.0 mm |
| 2026-09-26 | 阴 | 31°/16° | 0.0 mm |
| 2026-09-27 | 阴 | 32°/17° | 0.0 mm |
| 2026-09-28 | 阴 | 32°/19° | 0.0 mm |
| 2026-09-29 | 晴天 | 34°/15° | 0.0 mm |
| 2026-09-30 | 阴 | 35°/20° | 0.0 mm |
2026年09月华盛顿共记录 30 天，平均最高 34℃、最低 21℃，降水日 4 天。