| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 阴 | 32°/22° | 0.0 mm |
| 2026-09-02 | 阴 | 32°/19° | 0.0 mm |
| 2026-09-03 | 毛毛雨 | 33°/24° | 0.7 mm |
| 2026-09-04 | 晴间多云 | 33°/24° | 0.0 mm |
| 2026-09-05 | 阴 | 31°/23° | 0.0 mm |
| 2026-09-06 | 阴 | 29°/20° | 0.0 mm |
| 2026-09-07 | 阴 | 30°/20° | 0.0 mm |
| 2026-09-08 | 大雨 | 31°/22° | 8.3 mm |
| 2026-09-09 | 中雨 | 27°/19° | 12.9 mm |
| 2026-09-10 | 阴 | 27°/13° | 0.0 mm |
| 2026-09-11 | 多云 | 28°/17° | 0.0 mm |
| 2026-09-12 | 阴 | 23°/14° | 0.0 mm |
| 2026-09-13 | 毛毛雨 | 15°/13° | 1.1 mm |
| 2026-09-14 | 大雨 | 24°/13° | 47.2 mm |
| 2026-09-15 | 小雨 | 21°/16° | 4.4 mm |
| 2026-09-16 | 中雨 | 20°/14° | 8.3 mm |
| 2026-09-17 | 小毛毛雨 | 25°/18° | 0.4 mm |
| 2026-09-18 | 强阵雨 | 32°/20° | 15.5 mm |
| 2026-09-19 | 雾 | 24°/18° | 0.0 mm |
| 2026-09-20 | 小雨 | 18°/15° | 2.5 mm |
| 2026-09-21 | 雾 | 17°/13° | 0.0 mm |
| 2026-09-22 | 阴 | 17°/13° | 0.0 mm |
| 2026-09-23 | 阴 | 22°/14° | 0.0 mm |
| 2026-09-24 | 毛毛雨 | 18°/15° | 1.5 mm |
| 2026-09-25 | 中雨 | 16°/14° | 17.4 mm |
| 2026-09-26 | 大雨 | 22°/16° | 52.3 mm |
| 2026-09-27 | 雾 | 23°/17° | 0.0 mm |
| 2026-09-28 | 阴 | 21°/16° | 0.0 mm |
| 2026-09-29 | 小毛毛雨 | 21°/17° | 0.4 mm |
| 2026-09-30 | 大雨 | 22°/18° | 22.9 mm |
2026年09月华盛顿共记录 30 天，平均最高 24℃、最低 17℃，降水日 15 天。