| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 小雨 | 9°/1° | 1.2 mm |
| 2023-12-02 | 毛毛雨 | 12°/7° | 0.7 mm |
| 2023-12-03 | 中雨 | 13°/10° | 14.1 mm |
| 2023-12-04 | 阴 | 12°/5° | 0.0 mm |
| 2023-12-05 | 小毛毛雨 | 9°/2° | 0.0 mm |
| 2023-12-06 | 小毛毛雨 | 6°/2° | 0.0 mm |
| 2023-12-07 | 阴 | 6°/0° | 0.0 mm |
| 2023-12-08 | 阴 | 14°/0° | 0.0 mm |
| 2023-12-09 | 小毛毛雨 | 13°/1° | 0.0 mm |
| 2023-12-10 | 中雨 | 16°/8° | 24.8 mm |
| 2023-12-11 | 中雪 | 7°/1° | 12.7 mm |
| 2023-12-12 | 晴天 | 8°/-2° | 0.0 mm |
| 2023-12-13 | 多云 | 10°/0° | 0.0 mm |
| 2023-12-14 | 多云 | 8°/-1° | 0.0 mm |
| 2023-12-15 | 晴天 | 15°/0° | 0.0 mm |
| 2023-12-16 | 阴 | 14°/0° | 0.0 mm |
| 2023-12-17 | 大雨 | 12°/5° | 11.9 mm |
| 2023-12-18 | 大雨 | 13°/4° | 35.3 mm |
| 2023-12-19 | 阴 | 5°/0° | 0.0 mm |
| 2023-12-20 | 晴天 | 8°/-4° | 0.0 mm |
| 2023-12-21 | 阴 | 8°/-2° | 0.0 mm |
| 2023-12-22 | 阴 | 9°/1° | 0.0 mm |
| 2023-12-23 | 阴 | 9°/1° | 0.0 mm |
| 2023-12-24 | 毛毛雨 | 11°/4° | 0.0 mm |
| 2023-12-25 | 阴 | 14°/4° | 0.0 mm |
| 2023-12-26 | 小毛毛雨 | 9°/6° | 2.2 mm |
| 2023-12-27 | 中雨 | 12°/7° | 56.0 mm |
| 2023-12-28 | 小毛毛雨 | 13°/9° | 0.0 mm |
| 2023-12-29 | 阴 | 11°/6° | 0.0 mm |
| 2023-12-30 | 阴 | 8°/2° | 0.0 mm |
| 2023-12-31 | 阴 | 9°/3° | 0.0 mm |
2023年12月华盛顿共记录 31 天，平均最高 10℃、最低 2℃，降水日 14 天。