| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-12-01 | 中雪 | -1°/-3° | 2.2 mm |
| 2025-12-02 | 中雪 | -2°/-5° | 1.2 mm |
| 2025-12-03 | 雾 | 2°/-3° | 0.0 mm |
| 2025-12-04 | 阴 | 0°/-6° | 0.0 mm |
| 2025-12-05 | 阴 | 4°/-8° | 0.0 mm |
| 2025-12-06 | 阴 | 9°/0° | 0.0 mm |
| 2025-12-07 | 阴 | 7°/0° | 0.0 mm |
| 2025-12-08 | 阴 | 1°/-5° | 0.0 mm |
| 2025-12-09 | 阴 | 8°/-5° | 0.0 mm |
| 2025-12-10 | 阴 | 8°/-1° | 0.0 mm |
| 2025-12-11 | 中雪 | 2°/-3° | 0.5 mm |
| 2025-12-12 | 阴 | 3°/0° | 0.0 mm |
| 2025-12-13 | 阴 | 1°/-10° | 0.0 mm |
| 2025-12-14 | 阴 | -8°/-14° | 0.0 mm |
| 2025-12-15 | 阴 | 2°/-12° | 0.0 mm |
| 2025-12-16 | 雾 | 9°/-2° | 0.0 mm |
| 2025-12-17 | 雾 | 13°/3° | 0.0 mm |
| 2025-12-18 | 大雨 | 13°/1° | 26.6 mm |
| 2025-12-19 | 阴 | 2°/-3° | 0.0 mm |
| 2025-12-20 | 阴 | 13°/0° | 0.0 mm |
| 2025-12-21 | 阴 | 7°/-4° | 0.0 mm |
| 2025-12-22 | 阴 | 11°/-4° | 0.0 mm |
| 2025-12-23 | 雾 | 19°/9° | 0.0 mm |
| 2025-12-24 | 雾 | 17°/8° | 0.0 mm |
| 2025-12-25 | 阴 | 19°/14° | 0.0 mm |
| 2025-12-26 | 阴 | 21°/10° | 0.0 mm |
| 2025-12-27 | 雾 | 18°/9° | 0.0 mm |
| 2025-12-28 | 阴 | 23°/0° | 0.0 mm |
| 2025-12-29 | 阴 | -1°/-8° | 0.0 mm |
| 2025-12-30 | 阴 | 0°/-8° | 0.0 mm |
| 2025-12-31 | 阴 | 5°/-3° | 0.0 mm |
2025年12月华盛顿共记录 31 天，平均最高 7℃、最低 -1℃，降水日 4 天。