| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 晴间多云 | 35°/23° | 0.0 mm |
| 2026-09-02 | 多云 | 34°/23° | 0.0 mm |
| 2026-09-03 | 晴天 | 34°/23° | 0.0 mm |
| 2026-09-04 | 多云 | 34°/23° | 0.0 mm |
| 2026-09-05 | 阴 | 32°/24° | 0.0 mm |
| 2026-09-06 | 雾 | 28°/21° | 0.0 mm |
| 2026-09-07 | 阴 | 27°/19° | 0.0 mm |
| 2026-09-08 | 雾 | 32°/19° | 0.0 mm |
| 2026-09-09 | 大雨 | 26°/20° | 156.2 mm |
| 2026-09-10 | 雾 | 27°/17° | 0.0 mm |
| 2026-09-11 | 雾 | 26°/14° | 0.0 mm |
| 2026-09-12 | 阴 | 25°/17° | 0.0 mm |
| 2026-09-13 | 小毛毛雨 | 19°/13° | 0.4 mm |
| 2026-09-14 | 中雨 | 23°/12° | 3.2 mm |
| 2026-09-15 | 中雨 | 24°/18° | 8.3 mm |
| 2026-09-16 | 小毛毛雨 | 21°/17° | 0.8 mm |
| 2026-09-17 | 雾 | 27°/20° | 0.0 mm |
| 2026-09-18 | 雾 | 25°/18° | 0.0 mm |
| 2026-09-19 | 小毛毛雨 | 27°/18° | 0.4 mm |
| 2026-09-20 | 大雨 | 22°/16° | 31.4 mm |
| 2026-09-21 | 雾 | 16°/15° | 0.0 mm |
| 2026-09-22 | 中雨 | 17°/13° | 5.8 mm |
| 2026-09-23 | 阴 | 20°/11° | 0.0 mm |
| 2026-09-24 | 阴 | 20°/13° | 0.0 mm |
| 2026-09-25 | 小毛毛雨 | 18°/16° | 0.4 mm |
| 2026-09-26 | 阴 | 19°/14° | 0.0 mm |
| 2026-09-27 | 阴 | 20°/14° | 0.0 mm |
| 2026-09-28 | 阴 | 25°/13° | 0.0 mm |
| 2026-09-29 | 小毛毛雨 | 27°/10° | 0.4 mm |
| 2026-09-30 | 大雨 | 21°/17° | 30.3 mm |
2026年09月华盛顿共记录 30 天，平均最高 25℃、最低 17℃，降水日 11 天。