| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 中雪 | 3°/1° | 6.3 mm |
| 2023-12-02 | 中雪 | 3°/1° | 2.2 mm |
| 2023-12-03 | 中雪 | 4°/0° | 1.9 mm |
| 2023-12-04 | 小毛毛雨 | 3°/0° | 1.4 mm |
| 2023-12-05 | 小毛毛雨 | 2°/0° | 0.0 mm |
| 2023-12-06 | 阴 | 5°/-3° | 0.0 mm |
| 2023-12-07 | 阴 | 13°/1° | 0.0 mm |
| 2023-12-08 | 毛毛雨 | 14°/7° | 0.4 mm |
| 2023-12-09 | 小雨 | 7°/0° | 1.4 mm |
| 2023-12-10 | 阴 | 1°/-4° | 0.0 mm |
| 2023-12-11 | 阴 | 7°/-6° | 0.0 mm |
| 2023-12-12 | 阴 | 2°/-3° | 0.0 mm |
| 2023-12-13 | 阴 | 7°/-2° | 0.0 mm |
| 2023-12-14 | 阴 | 13°/-4° | 0.0 mm |
| 2023-12-15 | 阴 | 12°/1° | 0.0 mm |
| 2023-12-16 | 小雨 | 7°/5° | 2.6 mm |
| 2023-12-17 | 阴 | 5°/0° | 0.0 mm |
| 2023-12-18 | 晴天 | 0°/-7° | 0.0 mm |
| 2023-12-19 | 阴 | 3°/-9° | 0.0 mm |
| 2023-12-20 | 阴 | 8°/-3° | 0.0 mm |
| 2023-12-21 | 阴 | 10°/3° | 0.0 mm |
| 2023-12-22 | 小雨 | 9°/7° | 7.7 mm |
| 2023-12-23 | 阴 | 12°/7° | 0.0 mm |
| 2023-12-24 | 大毛毛雨 | 14°/8° | 0.0 mm |
| 2023-12-25 | 小雨 | 12°/2° | 4.4 mm |
| 2023-12-26 | 小雪 | 2°/0° | 0.0 mm |
| 2023-12-27 | 中雪 | 3°/0° | 3.1 mm |
| 2023-12-28 | 中雪 | 2°/0° | 6.9 mm |
| 2023-12-29 | 小雪 | 2°/-2° | 0.0 mm |
| 2023-12-30 | 阴 | 4°/-4° | 0.0 mm |
| 2023-12-31 | 阴 | 1°/-1° | 0.0 mm |
2023年12月华盛顿共记录 31 天，平均最高 6℃、最低 0℃，降水日 15 天。