| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-09-01 | 晴天 | 26°/12° | 0.0 mm |
| 2025-09-02 | 晴天 | 29°/12° | 0.0 mm |
| 2025-09-03 | 晴天 | 28°/14° | 0.0 mm |
| 2025-09-04 | 阴 | 30°/11° | 0.0 mm |
| 2025-09-05 | 阴 | 17°/10° | 0.0 mm |
| 2025-09-06 | 晴天 | 25°/7° | 0.0 mm |
| 2025-09-07 | 小毛毛雨 | 27°/12° | 0.4 mm |
| 2025-09-08 | 阴 | 30°/15° | 0.0 mm |
| 2025-09-09 | 阴 | 30°/13° | 0.0 mm |
| 2025-09-10 | 晴间多云 | 29°/13° | 0.0 mm |
| 2025-09-11 | 阴 | 31°/17° | 0.0 mm |
| 2025-09-12 | 小毛毛雨 | 31°/16° | 0.4 mm |
| 2025-09-13 | 小毛毛雨 | 25°/15° | 0.8 mm |
| 2025-09-14 | 大毛毛雨 | 19°/12° | 1.1 mm |
| 2025-09-15 | 多云 | 28°/12° | 0.0 mm |
| 2025-09-16 | 大雨 | 28°/13° | 11.1 mm |
| 2025-09-17 | 中雨 | 18°/10° | 3.6 mm |
| 2025-09-18 | 阴 | 20°/9° | 0.0 mm |
| 2025-09-19 | 阴 | 25°/10° | 0.0 mm |
| 2025-09-20 | 雾 | 24°/11° | 0.0 mm |
| 2025-09-21 | 多云 | 26°/11° | 0.0 mm |
| 2025-09-22 | 中雨 | 26°/12° | 4.7 mm |
| 2025-09-23 | 大雨 | 12°/10° | 31.8 mm |
| 2025-09-24 | 阴 | 19°/9° | 0.0 mm |
| 2025-09-25 | 晴天 | 24°/8° | 0.0 mm |
| 2025-09-26 | 阴 | 27°/9° | 0.0 mm |
| 2025-09-27 | 多云 | 24°/9° | 0.0 mm |
| 2025-09-28 | 阴 | 27°/13° | 0.0 mm |
| 2025-09-29 | 小雨 | 26°/11° | 1.4 mm |
| 2025-09-30 | 阴 | 25°/10° | 0.0 mm |
2025年09月华盛顿共记录 30 天，平均最高 25℃、最低 11℃，降水日 9 天。