| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-12-01 | 阴 | 12°/8° | 0.0 mm |
| 2025-12-02 | 大雨 | 12°/6° | 24.1 mm |
| 2025-12-03 | 雾 | 8°/2° | 0.0 mm |
| 2025-12-04 | 雾 | 8°/0° | 0.0 mm |
| 2025-12-05 | 小毛毛雨 | 9°/7° | 2.4 mm |
| 2025-12-06 | 中雨 | 9°/6° | 4.7 mm |
| 2025-12-07 | 雾 | 8°/5° | 0.0 mm |
| 2025-12-08 | 雾 | 10°/4° | 0.0 mm |
| 2025-12-09 | 阴 | 8°/1° | 0.0 mm |
| 2025-12-10 | 雾 | 14°/-2° | 0.0 mm |
| 2025-12-11 | 阴 | 11°/3° | 0.0 mm |
| 2025-12-12 | 晴间多云 | 17°/-1° | 0.0 mm |
| 2025-12-13 | 多云 | 20°/3° | 0.0 mm |
| 2025-12-14 | 阴 | 16°/1° | 0.0 mm |
| 2025-12-15 | 晴天 | 5°/-5° | 0.0 mm |
| 2025-12-16 | 阴 | 13°/-7° | 0.0 mm |
| 2025-12-17 | 阴 | 18°/0° | 0.0 mm |
| 2025-12-18 | 大雨 | 16°/8° | 12.3 mm |
| 2025-12-19 | 阴 | 17°/7° | 0.0 mm |
| 2025-12-20 | 晴天 | 17°/0° | 0.0 mm |
| 2025-12-21 | 阴 | 20°/1° | 0.0 mm |
| 2025-12-22 | 阴 | 16°/8° | 0.0 mm |
| 2025-12-23 | 阴 | 19°/7° | 0.0 mm |
| 2025-12-24 | 晴间多云 | 24°/12° | 0.0 mm |
| 2025-12-25 | 阴 | 24°/12° | 0.0 mm |
| 2025-12-26 | 阴 | 24°/12° | 0.0 mm |
| 2025-12-27 | 阴 | 25°/16° | 0.0 mm |
| 2025-12-28 | 阴 | 22°/13° | 0.0 mm |
| 2025-12-29 | 小毛毛雨 | 18°/4° | 0.4 mm |
| 2025-12-30 | 晴间多云 | 8°/-1° | 0.0 mm |
| 2025-12-31 | 晴天 | 10°/-1° | 0.0 mm |
2025年12月华盛顿共记录 31 天，平均最高 14℃、最低 4℃，降水日 5 天。