| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-09-01 | 晴间多云 | 34°/14° | 0.0 mm |
| 2025-09-02 | 晴天 | 35°/15° | 0.0 mm |
| 2025-09-03 | 多云 | 34°/16° | 0.0 mm |
| 2025-09-04 | 多云 | 35°/15° | 0.0 mm |
| 2025-09-05 | 晴间多云 | 31°/16° | 0.0 mm |
| 2025-09-06 | 阴 | 24°/13° | 0.0 mm |
| 2025-09-07 | 阴 | 27°/11° | 0.0 mm |
| 2025-09-08 | 晴间多云 | 28°/12° | 0.0 mm |
| 2025-09-09 | 阴 | 27°/14° | 0.0 mm |
| 2025-09-10 | 阴 | 28°/14° | 0.0 mm |
| 2025-09-11 | 阴 | 24°/10° | 0.0 mm |
| 2025-09-12 | 阴 | 23°/11° | 0.0 mm |
| 2025-09-13 | 晴天 | 26°/9° | 0.0 mm |
| 2025-09-14 | 阴 | 21°/12° | 0.0 mm |
| 2025-09-15 | 阴 | 22°/8° | 0.0 mm |
| 2025-09-16 | 晴天 | 25°/7° | 0.0 mm |
| 2025-09-17 | 晴天 | 26°/8° | 0.0 mm |
| 2025-09-18 | 晴天 | 28°/8° | 0.0 mm |
| 2025-09-19 | 阴 | 29°/11° | 0.0 mm |
| 2025-09-20 | 阴 | 29°/9° | 0.0 mm |
| 2025-09-21 | 小毛毛雨 | 21°/11° | 0.4 mm |
| 2025-09-22 | 晴间多云 | 23°/8° | 0.0 mm |
| 2025-09-23 | 晴天 | 24°/6° | 0.0 mm |
| 2025-09-24 | 晴天 | 26°/4° | 0.0 mm |
| 2025-09-25 | 晴天 | 27°/7° | 0.0 mm |
| 2025-09-26 | 阴 | 24°/9° | 0.0 mm |
| 2025-09-27 | 晴天 | 24°/6° | 0.0 mm |
| 2025-09-28 | 晴天 | 27°/6° | 0.0 mm |
| 2025-09-29 | 中雨 | 23°/11° | 3.2 mm |
| 2025-09-30 | 中雨 | 17°/12° | 5.1 mm |
2025年09月华盛顿共记录 30 天，平均最高 26℃、最低 10℃，降水日 3 天。