| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 大雪 | 0°/-2° | 4.9 mm |
| 2023-12-02 | 中雪 | 3°/-2° | 2.3 mm |
| 2023-12-03 | 中雪 | 2°/0° | 8.2 mm |
| 2023-12-04 | 阴 | 6°/0° | 0.0 mm |
| 2023-12-05 | 雾 | 10°/2° | 0.0 mm |
| 2023-12-06 | 小雨 | 8°/2° | 1.4 mm |
| 2023-12-07 | 小雪 | 7°/1° | 1.4 mm |
| 2023-12-08 | 阴 | 4°/0° | 0.0 mm |
| 2023-12-09 | 阴 | 0°/-5° | 0.0 mm |
| 2023-12-10 | 中雪 | 0°/-1° | 6.3 mm |
| 2023-12-11 | 中雪 | 2°/0° | 1.1 mm |
| 2023-12-12 | 阴 | 5°/0° | 0.0 mm |
| 2023-12-13 | 雾 | 3°/0° | 0.0 mm |
| 2023-12-14 | 阴 | 3°/0° | 0.0 mm |
| 2023-12-15 | 阴 | 2°/-1° | 0.0 mm |
| 2023-12-16 | 雾 | 2°/-4° | 0.0 mm |
| 2023-12-17 | 雾 | 0°/-3° | 0.0 mm |
| 2023-12-18 | 雾 | 0°/-3° | 0.0 mm |
| 2023-12-19 | 大毛毛雨 | 5°/0° | 2.2 mm |
| 2023-12-20 | 雾 | 8°/0° | 0.0 mm |
| 2023-12-21 | 雾 | 4°/-1° | 0.0 mm |
| 2023-12-22 | 雾 | 4°/1° | 0.0 mm |
| 2023-12-23 | 晴天 | 3°/-2° | 0.0 mm |
| 2023-12-24 | 阴 | 0°/-9° | 0.0 mm |
| 2023-12-25 | 阴 | 0°/-10° | 0.0 mm |
| 2023-12-26 | 中雪 | 0°/-4° | 1.9 mm |
| 2023-12-27 | 阴 | 1°/-2° | 0.0 mm |
| 2023-12-28 | 雾 | 4°/0° | 0.0 mm |
| 2023-12-29 | 阴 | 5°/0° | 0.0 mm |
| 2023-12-30 | 阴 | 7°/0° | 0.0 mm |
| 2023-12-31 | 多云 | 6°/-1° | 0.0 mm |
2023年12月华盛顿共记录 31 天，平均最高 3℃、最低 -1℃，降水日 9 天。