| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 小毛毛雨 | 20°/14° | 0.4 mm |
| 2026-09-02 | 中雨 | 17°/13° | 8.6 mm |
| 2026-09-03 | 大雨 | 15°/12° | 12.2 mm |
| 2026-09-04 | 小雨 | 18°/11° | 2.5 mm |
| 2026-09-05 | 阴 | 20°/10° | 0.0 mm |
| 2026-09-06 | 阴 | 19°/12° | 0.0 mm |
| 2026-09-07 | 雾 | 23°/10° | 0.0 mm |
| 2026-09-08 | 晴天 | 27°/11° | 0.0 mm |
| 2026-09-09 | 晴天 | 31°/13° | 0.0 mm |
| 2026-09-10 | 阴 | 26°/12° | 0.0 mm |
| 2026-09-11 | 阴 | 22°/6° | 0.0 mm |
| 2026-09-12 | 小毛毛雨 | 17°/12° | 0.8 mm |
| 2026-09-13 | 小毛毛雨 | 18°/11° | 0.4 mm |
| 2026-09-14 | 阴 | 21°/11° | 0.0 mm |
| 2026-09-15 | 阴 | 21°/10° | 0.0 mm |
| 2026-09-16 | 晴天 | 27°/12° | 0.0 mm |
| 2026-09-17 | 晴天 | 30°/12° | 0.0 mm |
| 2026-09-18 | 阴 | 21°/10° | 0.0 mm |
| 2026-09-19 | 阴 | 24°/9° | 0.0 mm |
| 2026-09-20 | 晴间多云 | 27°/9° | 0.0 mm |
| 2026-09-21 | 阴 | 24°/12° | 0.0 mm |
| 2026-09-22 | 阴 | 23°/12° | 0.0 mm |
| 2026-09-23 | 阴 | 21°/8° | 0.0 mm |
| 2026-09-24 | 大雨 | 22°/8° | 10.5 mm |
| 2026-09-25 | 小毛毛雨 | 18°/9° | 0.8 mm |
| 2026-09-26 | 雾 | 20°/6° | 0.0 mm |
| 2026-09-27 | 晴间多云 | 23°/10° | 0.0 mm |
| 2026-09-28 | 阴 | 23°/5° | 0.0 mm |
| 2026-09-29 | 阴 | 21°/12° | 0.0 mm |
| 2026-09-30 | 阴 | 23°/13° | 0.0 mm |
2026年09月华盛顿共记录 30 天，平均最高 22℃、最低 10℃，降水日 8 天。