| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-12-01 | 阴 | 0°/-4° | 0.0 mm |
| 2025-12-02 | 中雪 | 3°/-3° | 11.8 mm |
| 2025-12-03 | 雾 | 2°/-4° | 0.0 mm |
| 2025-12-04 | 阴 | 1°/-4° | 0.0 mm |
| 2025-12-05 | 大雪 | -2°/-6° | 10.1 mm |
| 2025-12-06 | 雾 | 2°/-2° | 0.0 mm |
| 2025-12-07 | 阴 | 4°/-2° | 0.0 mm |
| 2025-12-08 | 中雪 | 0°/-10° | 6.9 mm |
| 2025-12-09 | 雾 | -2°/-9° | 0.0 mm |
| 2025-12-10 | 中雪 | 4°/-3° | 2.3 mm |
| 2025-12-11 | 阴 | -1°/-7° | 0.0 mm |
| 2025-12-12 | 阴 | -2°/-8° | 0.0 mm |
| 2025-12-13 | 雾 | 2°/-6° | 0.0 mm |
| 2025-12-14 | 中雪 | 0°/-18° | 0.8 mm |
| 2025-12-15 | 阴 | -4°/-18° | 0.0 mm |
| 2025-12-16 | 雾 | 5°/-7° | 0.0 mm |
| 2025-12-17 | 阴 | 9°/0° | 0.0 mm |
| 2025-12-18 | 小雨 | 7°/0° | 6.5 mm |
| 2025-12-19 | 小雪 | 8°/-2° | 7.7 mm |
| 2025-12-20 | 阴 | 5°/-4° | 0.0 mm |
| 2025-12-21 | 阴 | 3°/-2° | 0.0 mm |
| 2025-12-22 | 阴 | 3°/-6° | 0.0 mm |
| 2025-12-23 | 小雨 | 9°/0° | 1.8 mm |
| 2025-12-24 | 阴 | 10°/4° | 0.0 mm |
| 2025-12-25 | 中雨 | 11°/3° | 8.4 mm |
| 2025-12-26 | 毛毛雨 | 7°/0° | 1.1 mm |
| 2025-12-27 | 阴 | 10°/2° | 0.0 mm |
| 2025-12-28 | 雾 | 9°/1° | 0.0 mm |
| 2025-12-29 | 毛毛雨 | 10°/-10° | 0.7 mm |
| 2025-12-30 | 阴 | -7°/-11° | 0.0 mm |
| 2025-12-31 | 阴 | -2°/-11° | 0.0 mm |
2025年12月海兰共记录 31 天，平均最高 3℃、最低 -4℃，降水日 11 天。