| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 阴 | 35°/24° | 0.0 mm |
| 2026-09-02 | 阴 | 31°/23° | 0.0 mm |
| 2026-09-03 | 阴 | 32°/23° | 0.0 mm |
| 2026-09-04 | 雾 | 33°/22° | 0.0 mm |
| 2026-09-05 | 阴 | 29°/22° | 0.0 mm |
| 2026-09-06 | 阴 | 28°/17° | 0.0 mm |
| 2026-09-07 | 晴间多云 | 28°/17° | 0.0 mm |
| 2026-09-08 | 阴 | 29°/15° | 0.0 mm |
| 2026-09-09 | 晴天 | 31°/19° | 0.0 mm |
| 2026-09-10 | 阴 | 31°/23° | 0.0 mm |
| 2026-09-11 | 中雨 | 27°/20° | 4.3 mm |
| 2026-09-12 | 阴 | 27°/20° | 0.0 mm |
| 2026-09-13 | 大毛毛雨 | 30°/23° | 1.5 mm |
| 2026-09-14 | 阴 | 27°/19° | 0.0 mm |
| 2026-09-15 | 晴间多云 | 26°/13° | 0.0 mm |
| 2026-09-16 | 晴间多云 | 29°/16° | 0.0 mm |
| 2026-09-17 | 强阵雨 | 30°/20° | 17.6 mm |
| 2026-09-18 | 阴 | 30°/22° | 0.0 mm |
| 2026-09-19 | 阴 | 27°/19° | 0.0 mm |
| 2026-09-20 | 阴 | 29°/22° | 0.0 mm |
| 2026-09-21 | 中雨 | 24°/18° | 3.3 mm |
| 2026-09-22 | 小雨 | 18°/15° | 6.8 mm |
| 2026-09-23 | 毛毛雨 | 17°/12° | 2.7 mm |
| 2026-09-24 | 阴 | 18°/10° | 0.0 mm |
| 2026-09-25 | 阴 | 24°/11° | 0.0 mm |
| 2026-09-26 | 小雨 | 19°/13° | 2.8 mm |
| 2026-09-27 | 小毛毛雨 | 16°/15° | 1.6 mm |
| 2026-09-28 | 阴 | 21°/15° | 0.0 mm |
| 2026-09-29 | 阴 | 23°/17° | 0.0 mm |
| 2026-09-30 | 阴 | 27°/15° | 0.0 mm |
2026年09月华盛顿共记录 30 天，平均最高 26℃、最低 18℃，降水日 8 天。