| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 多云 | 23°/9° | 0.0 mm |
| 2026-09-02 | 阴 | 21°/10° | 0.0 mm |
| 2026-09-03 | 中雨 | 16°/12° | 23.0 mm |
| 2026-09-04 | 小雨 | 22°/14° | 1.4 mm |
| 2026-09-05 | 阴 | 18°/12° | 0.0 mm |
| 2026-09-06 | 阴 | 17°/10° | 0.0 mm |
| 2026-09-07 | 多云 | 22°/9° | 0.0 mm |
| 2026-09-08 | 阴 | 19°/9° | 0.0 mm |
| 2026-09-09 | 阴 | 15°/3° | 0.0 mm |
| 2026-09-10 | 中雨 | 26°/14° | 6.2 mm |
| 2026-09-11 | 晴天 | 18°/11° | 0.0 mm |
| 2026-09-12 | 晴天 | 21°/8° | 0.0 mm |
| 2026-09-13 | 小雨 | 17°/10° | 3.2 mm |
| 2026-09-14 | 雾 | 20°/11° | 0.0 mm |
| 2026-09-15 | 晴间多云 | 20°/7° | 0.0 mm |
| 2026-09-16 | 多云 | 21°/7° | 0.0 mm |
| 2026-09-17 | 小雨 | 19°/11° | 1.8 mm |
| 2026-09-18 | 大雨 | 21°/11° | 26.3 mm |
| 2026-09-19 | 晴天 | 16°/6° | 0.0 mm |
| 2026-09-20 | 小毛毛雨 | 15°/3° | 0.4 mm |
| 2026-09-21 | 阴 | 17°/8° | 0.0 mm |
| 2026-09-22 | 阴 | 17°/6° | 0.0 mm |
| 2026-09-23 | 阴 | 17°/3° | 0.0 mm |
| 2026-09-24 | 阴 | 20°/1° | 0.0 mm |
| 2026-09-25 | 阴 | 22°/4° | 0.0 mm |
| 2026-09-26 | 阴 | 21°/11° | 0.0 mm |
| 2026-09-27 | 大毛毛雨 | 18°/12° | 2.5 mm |
| 2026-09-28 | 中雨 | 13°/11° | 9.8 mm |
| 2026-09-29 | 毛毛雨 | 13°/11° | 0.7 mm |
| 2026-09-30 | 阴 | 18°/10° | 0.0 mm |
2026年09月华盛顿共记录 30 天，平均最高 18℃、最低 8℃，降水日 10 天。