| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 雾 | 31°/19° | 0.0 mm |
| 2026-09-02 | 晴天 | 32°/19° | 0.0 mm |
| 2026-09-03 | 雾 | 32°/19° | 0.0 mm |
| 2026-09-04 | 小毛毛雨 | 32°/21° | 0.4 mm |
| 2026-09-05 | 阴 | 29°/20° | 0.0 mm |
| 2026-09-06 | 阴 | 26°/20° | 0.0 mm |
| 2026-09-07 | 阴 | 27°/18° | 0.0 mm |
| 2026-09-08 | 多云 | 28°/16° | 0.0 mm |
| 2026-09-09 | 多云 | 29°/17° | 0.0 mm |
| 2026-09-10 | 阴 | 29°/18° | 0.0 mm |
| 2026-09-11 | 阴 | 30°/20° | 0.0 mm |
| 2026-09-12 | 强阵雨 | 27°/20° | 19.2 mm |
| 2026-09-13 | 阴 | 28°/19° | 0.0 mm |
| 2026-09-14 | 雾 | 28°/18° | 0.0 mm |
| 2026-09-15 | 晴间多云 | 30°/17° | 0.0 mm |
| 2026-09-16 | 晴间多云 | 30°/18° | 0.0 mm |
| 2026-09-17 | 雾 | 31°/18° | 0.0 mm |
| 2026-09-18 | 雾 | 30°/19° | 0.0 mm |
| 2026-09-19 | 雾 | 29°/18° | 0.0 mm |
| 2026-09-20 | 雾 | 29°/18° | 0.0 mm |
| 2026-09-21 | 小毛毛雨 | 30°/18° | 0.4 mm |
| 2026-09-22 | 大雨 | 24°/18° | 20.8 mm |
| 2026-09-23 | 小雨 | 22°/16° | 3.3 mm |
| 2026-09-24 | 阴 | 21°/13° | 0.0 mm |
| 2026-09-25 | 多云 | 21°/11° | 0.0 mm |
| 2026-09-26 | 雾 | 22°/8° | 0.0 mm |
| 2026-09-27 | 雾 | 21°/7° | 0.0 mm |
| 2026-09-28 | 多云 | 22°/8° | 0.0 mm |
| 2026-09-29 | 雾 | 24°/10° | 0.0 mm |
| 2026-09-30 | 晴间多云 | 26°/11° | 0.0 mm |
2026年09月华盛顿共记录 30 天，平均最高 27℃、最低 16℃，降水日 5 天。