| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-01-01 | 中雪 | 0°/-9° | 4.4 mm |
| 2026-01-02 | 阴 | -3°/-10° | 0.0 mm |
| 2026-01-03 | 阴 | -1°/-11° | 0.0 mm |
| 2026-01-04 | 中雪 | -1°/-6° | 0.4 mm |
| 2026-01-05 | 阴 | 0°/-9° | 0.0 mm |
| 2026-01-06 | 阴 | 2°/0° | 0.0 mm |
| 2026-01-07 | 雾 | 4°/0° | 0.0 mm |
| 2026-01-08 | 阴 | 8°/0° | 0.0 mm |
| 2026-01-09 | 小毛毛雨 | 9°/-4° | 0.8 mm |
| 2026-01-10 | 中雨 | 11°/3° | 6.5 mm |
| 2026-01-11 | 中雨 | 6°/0° | 4.4 mm |
| 2026-01-12 | 阴 | 3°/-1° | 0.0 mm |
| 2026-01-13 | 阴 | 5°/-2° | 0.0 mm |
| 2026-01-14 | 阴 | 9°/5° | 0.0 mm |
| 2026-01-15 | 阴 | 8°/0° | 0.0 mm |
| 2026-01-16 | 阴 | 0°/-7° | 0.0 mm |
| 2026-01-17 | 毛毛雨 | 6°/-2° | 0.7 mm |
| 2026-01-18 | 大雪 | 0°/-2° | 15.8 mm |
| 2026-01-19 | 中雪 | 0°/-5° | 2.7 mm |
| 2026-01-20 | 阴 | -2°/-11° | 0.0 mm |
| 2026-01-21 | 雾 | 1°/-15° | 0.0 mm |
| 2026-01-22 | 阴 | 7°/0° | 0.0 mm |
| 2026-01-23 | 阴 | 1°/-7° | 0.0 mm |
| 2026-01-24 | 多云 | -8°/-14° | 0.0 mm |
| 2026-01-25 | 大雪 | -3°/-13° | 35.2 mm |
| 2026-01-26 | 大雪 | -2°/-9° | 7.3 mm |
| 2026-01-27 | 阴 | -5°/-15° | 0.0 mm |
| 2026-01-28 | 阴 | -5°/-16° | 0.0 mm |
| 2026-01-29 | 阴 | -5°/-15° | 0.0 mm |
| 2026-01-30 | 晴天 | -10°/-15° | 0.0 mm |
| 2026-01-31 | 多云 | -5°/-19° | 0.0 mm |
2026年01月华盛顿共记录 31 天，平均最高 0℃、最低 -6℃，降水日 10 天。