| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 中雨 | 12°/6° | 0.4 mm |
| 2023-12-02 | 毛毛雨 | 6°/4° | 0.4 mm |
| 2023-12-03 | 小毛毛雨 | 11°/3° | 0.0 mm |
| 2023-12-04 | 大毛毛雨 | 6°/1° | 0.7 mm |
| 2023-12-05 | 小毛毛雨 | 7°/1° | 0.0 mm |
| 2023-12-06 | 阴 | 9°/1° | 0.0 mm |
| 2023-12-07 | 阴 | 17°/4° | 0.0 mm |
| 2023-12-08 | 小毛毛雨 | 14°/8° | 0.0 mm |
| 2023-12-09 | 小毛毛雨 | 14°/4° | 0.0 mm |
| 2023-12-10 | 阴 | 6°/-1° | 0.0 mm |
| 2023-12-11 | 晴间多云 | 10°/-1° | 0.0 mm |
| 2023-12-12 | 阴 | 13°/-1° | 0.0 mm |
| 2023-12-13 | 阴 | 12°/0° | 0.0 mm |
| 2023-12-14 | 阴 | 14°/0° | 0.0 mm |
| 2023-12-15 | 阴 | 14°/2° | 0.0 mm |
| 2023-12-16 | 大毛毛雨 | 10°/4° | 0.0 mm |
| 2023-12-17 | 阴 | 8°/1° | 0.0 mm |
| 2023-12-18 | 晴天 | 3°/-3° | 0.0 mm |
| 2023-12-19 | 阴 | 6°/-6° | 0.0 mm |
| 2023-12-20 | 阴 | 13°/2° | 0.0 mm |
| 2023-12-21 | 小毛毛雨 | 15°/4° | 0.0 mm |
| 2023-12-22 | 大毛毛雨 | 11°/8° | 8.8 mm |
| 2023-12-23 | 小毛毛雨 | 14°/7° | 0.0 mm |
| 2023-12-24 | 小毛毛雨 | 17°/7° | 0.0 mm |
| 2023-12-25 | 小雨 | 13°/2° | 10.2 mm |
| 2023-12-26 | 阴 | 7°/0° | 0.0 mm |
| 2023-12-27 | 毛毛雨 | 4°/0° | 3.6 mm |
| 2023-12-28 | 中雪 | 5°/0° | 0.0 mm |
| 2023-12-29 | 中雪 | 1°/0° | 0.8 mm |
| 2023-12-30 | 阴 | 9°/-1° | 0.0 mm |
| 2023-12-31 | 阴 | 3°/0° | 0.0 mm |
2023年12月华盛顿共记录 31 天，平均最高 9℃、最低 1℃，降水日 16 天。