| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 阴 | 30°/21° | 0.0 mm |
| 2026-09-02 | 晴间多云 | 33°/21° | 0.0 mm |
| 2026-09-03 | 晴间多云 | 32°/21° | 0.0 mm |
| 2026-09-04 | 中阵雨 | 29°/20° | 6.1 mm |
| 2026-09-05 | 大雨 | 27°/20° | 38.9 mm |
| 2026-09-06 | 多云 | 26°/17° | 0.0 mm |
| 2026-09-07 | 多云 | 27°/15° | 0.0 mm |
| 2026-09-08 | 阴 | 28°/16° | 0.0 mm |
| 2026-09-09 | 阴 | 30°/19° | 0.0 mm |
| 2026-09-10 | 小毛毛雨 | 25°/21° | 0.4 mm |
| 2026-09-11 | 毛毛雨 | 26°/19° | 1.5 mm |
| 2026-09-12 | 强阵雨 | 27°/19° | 153.8 mm |
| 2026-09-13 | 小毛毛雨 | 27°/19° | 0.4 mm |
| 2026-09-14 | 晴间多云 | 22°/14° | 0.0 mm |
| 2026-09-15 | 雾 | 28°/11° | 0.0 mm |
| 2026-09-16 | 晴间多云 | 30°/17° | 0.0 mm |
| 2026-09-17 | 小毛毛雨 | 28°/21° | 0.4 mm |
| 2026-09-18 | 雾 | 25°/19° | 0.0 mm |
| 2026-09-19 | 大雨 | 27°/15° | 65.5 mm |
| 2026-09-20 | 大雨 | 25°/19° | 78.9 mm |
| 2026-09-21 | 大雨 | 21°/14° | 135.1 mm |
| 2026-09-22 | 小毛毛雨 | 18°/14° | 0.4 mm |
| 2026-09-23 | 大毛毛雨 | 19°/14° | 1.1 mm |
| 2026-09-24 | 大雨 | 19°/10° | 22.1 mm |
| 2026-09-25 | 晴天 | 20°/5° | 0.0 mm |
| 2026-09-26 | 多云 | 21°/6° | 0.0 mm |
| 2026-09-27 | 阴 | 21°/8° | 0.0 mm |
| 2026-09-28 | 阴 | 20°/11° | 0.0 mm |
| 2026-09-29 | 阴 | 22°/14° | 0.0 mm |
| 2026-09-30 | 雾 | 24°/11° | 0.0 mm |
2026年09月华盛顿共记录 30 天，平均最高 25℃、最低 15℃，降水日 13 天。