| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 小雨 | 9°/5° | 3.2 mm |
| 2023-12-02 | 小毛毛雨 | 15°/10° | 1.1 mm |
| 2023-12-03 | 小雨 | 13°/6° | 14.5 mm |
| 2023-12-04 | 小毛毛雨 | 6°/3° | 0.0 mm |
| 2023-12-05 | 小雪 | 4°/1° | 2.1 mm |
| 2023-12-06 | 小雪 | 2°/0° | 0.0 mm |
| 2023-12-07 | 阴 | 6°/0° | 0.0 mm |
| 2023-12-08 | 阴 | 16°/1° | 0.0 mm |
| 2023-12-09 | 毛毛雨 | 15°/9° | 2.2 mm |
| 2023-12-10 | 毛毛雨 | 15°/1° | 27.8 mm |
| 2023-12-11 | 阴 | 1°/0° | 0.0 mm |
| 2023-12-12 | 晴天 | 8°/-1° | 0.0 mm |
| 2023-12-13 | 晴间多云 | 4°/-4° | 0.0 mm |
| 2023-12-14 | 晴间多云 | 6°/-6° | 0.0 mm |
| 2023-12-15 | 阴 | 11°/-3° | 0.0 mm |
| 2023-12-16 | 阴 | 14°/-3° | 0.0 mm |
| 2023-12-17 | 大毛毛雨 | 10°/6° | 0.4 mm |
| 2023-12-18 | 中雪 | 7°/0° | 0.7 mm |
| 2023-12-19 | 小雪 | 0°/-4° | 0.8 mm |
| 2023-12-20 | 多云 | 5°/-7° | 0.0 mm |
| 2023-12-21 | 阴 | 6°/-3° | 0.0 mm |
| 2023-12-22 | 阴 | 8°/1° | 0.0 mm |
| 2023-12-23 | 毛毛雨 | 13°/2° | 1.1 mm |
| 2023-12-24 | 小毛毛雨 | 12°/8° | 4.6 mm |
| 2023-12-25 | 阴 | 15°/6° | 0.7 mm |
| 2023-12-26 | 大毛毛雨 | 15°/9° | 0.0 mm |
| 2023-12-27 | 中雨 | 11°/9° | 12.2 mm |
| 2023-12-28 | 小毛毛雨 | 9°/5° | 0.0 mm |
| 2023-12-29 | 小毛毛雨 | 4°/0° | 0.0 mm |
| 2023-12-30 | 小毛毛雨 | 3°/1° | 0.0 mm |
| 2023-12-31 | 中雪 | 3°/1° | 0.4 mm |
2023年12月华盛顿共记录 31 天，平均最高 8℃、最低 1℃，降水日 20 天。