| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 多云 | 34°/21° | 0.0 mm |
| 2026-09-02 | 晴天 | 35°/22° | 0.0 mm |
| 2026-09-03 | 阴 | 36°/22° | 0.0 mm |
| 2026-09-04 | 晴间多云 | 36°/22° | 0.0 mm |
| 2026-09-05 | 阵雨 | 34°/23° | 1.4 mm |
| 2026-09-06 | 阴 | 29°/20° | 0.0 mm |
| 2026-09-07 | 多云 | 30°/15° | 0.0 mm |
| 2026-09-08 | 强阵雨 | 31°/20° | 15.5 mm |
| 2026-09-09 | 阴 | 33°/22° | 0.0 mm |
| 2026-09-10 | 阵雨 | 27°/22° | 4.8 mm |
| 2026-09-11 | 大毛毛雨 | 29°/21° | 1.8 mm |
| 2026-09-12 | 阴 | 29°/22° | 0.0 mm |
| 2026-09-13 | 阴 | 32°/20° | 0.0 mm |
| 2026-09-14 | 阴 | 28°/17° | 0.0 mm |
| 2026-09-15 | 晴间多云 | 34°/17° | 0.0 mm |
| 2026-09-16 | 多云 | 33°/23° | 0.0 mm |
| 2026-09-17 | 多云 | 33°/23° | 0.0 mm |
| 2026-09-18 | 强阵雨 | 33°/21° | 108.1 mm |
| 2026-09-19 | 大毛毛雨 | 32°/20° | 1.8 mm |
| 2026-09-20 | 阴 | 32°/23° | 0.0 mm |
| 2026-09-21 | 阴 | 30°/20° | 0.0 mm |
| 2026-09-22 | 雾 | 20°/16° | 0.0 mm |
| 2026-09-23 | 阴 | 21°/17° | 0.0 mm |
| 2026-09-24 | 阴 | 20°/17° | 0.0 mm |
| 2026-09-25 | 阴 | 24°/13° | 0.0 mm |
| 2026-09-26 | 阴 | 25°/13° | 0.0 mm |
| 2026-09-27 | 阴 | 24°/7° | 0.0 mm |
| 2026-09-28 | 阴 | 25°/7° | 0.0 mm |
| 2026-09-29 | 晴间多云 | 27°/9° | 0.0 mm |
| 2026-09-30 | 晴间多云 | 29°/13° | 0.0 mm |
2026年09月华盛顿共记录 30 天，平均最高 29℃、最低 18℃，降水日 6 天。