| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2024-09-01 | 阴 | 34°/22° | 0.0 mm |
| 2024-09-02 | 阴 | 32°/22° | 0.0 mm |
| 2024-09-03 | 阴 | 29°/22° | 0.0 mm |
| 2024-09-04 | 阴 | 29°/18° | 0.0 mm |
| 2024-09-05 | 阴 | 28°/20° | 0.0 mm |
| 2024-09-06 | 小毛毛雨 | 26°/21° | 1.2 mm |
| 2024-09-07 | 小毛毛雨 | 29°/20° | 0.4 mm |
| 2024-09-08 | 阴 | 28°/20° | 0.0 mm |
| 2024-09-09 | 阴 | 28°/18° | 0.0 mm |
| 2024-09-10 | 阴 | 30°/16° | 0.0 mm |
| 2024-09-11 | 阴 | 26°/19° | 0.0 mm |
| 2024-09-12 | 毛毛雨 | 23°/20° | 1.9 mm |
| 2024-09-13 | 中阵雨 | 25°/21° | 6.5 mm |
| 2024-09-14 | 阴 | 26°/21° | 0.0 mm |
| 2024-09-15 | 阴 | 27°/22° | 0.0 mm |
| 2024-09-16 | 阴 | 27°/19° | 0.0 mm |
| 2024-09-17 | 阴 | 29°/16° | 0.0 mm |
| 2024-09-18 | 阴 | 29°/20° | 0.0 mm |
| 2024-09-19 | 阴 | 29°/19° | 0.0 mm |
| 2024-09-20 | 晴间多云 | 31°/18° | 0.0 mm |
| 2024-09-21 | 阴 | 32°/19° | 0.0 mm |
| 2024-09-22 | 阴 | 34°/20° | 0.0 mm |
| 2024-09-23 | 阴 | 34°/22° | 0.0 mm |
| 2024-09-24 | 阴 | 32°/23° | 0.0 mm |
| 2024-09-25 | 小毛毛雨 | 31°/22° | 0.4 mm |
| 2024-09-26 | 大雨 | 23°/21° | 178.8 mm |
| 2024-09-27 | 大雨 | 25°/20° | 91.8 mm |
| 2024-09-28 | 阴 | 27°/18° | 0.0 mm |
| 2024-09-29 | 阴 | 27°/20° | 0.0 mm |
| 2024-09-30 | 雾 | 27°/21° | 0.0 mm |
2024年09月华盛顿共记录 30 天，平均最高 28℃、最低 20℃，降水日 7 天。