| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-12-01 | 阴 | 5°/-2° | 0.0 mm |
| 2025-12-02 | 阴 | 1°/-3° | 0.0 mm |
| 2025-12-03 | 阴 | 1°/-4° | 0.0 mm |
| 2025-12-04 | 阴 | 3°/-1° | 0.0 mm |
| 2025-12-05 | 阴 | 5°/-2° | 0.0 mm |
| 2025-12-06 | 阴 | 4°/0° | 0.0 mm |
| 2025-12-07 | 阴 | 4°/-1° | 0.0 mm |
| 2025-12-08 | 小毛毛雨 | 4°/0° | 0.1 mm |
| 2025-12-09 | 阴 | 4°/0° | 0.0 mm |
| 2025-12-10 | 阴 | 3°/0° | 0.0 mm |
| 2025-12-11 | 阴 | 6°/-1° | 0.0 mm |
| 2025-12-12 | 小阵雪 | -1°/-10° | 2.8 mm |
| 2025-12-13 | 阴 | -1°/-10° | 0.0 mm |
| 2025-12-14 | 晴天 | 3°/-7° | 0.0 mm |
| 2025-12-15 | 阴 | 7°/-3° | 0.0 mm |
| 2025-12-16 | 阴 | 5°/0° | 0.0 mm |
| 2025-12-17 | 阴 | 5°/0° | 0.0 mm |
| 2025-12-18 | 阴 | 7°/0° | 0.0 mm |
| 2025-12-19 | 阴 | 1°/-3° | 0.0 mm |
| 2025-12-20 | 阴 | -1°/-5° | 0.0 mm |
| 2025-12-21 | 阴 | 1°/-4° | 0.0 mm |
| 2025-12-22 | 阴 | 1°/-3° | 0.0 mm |
| 2025-12-23 | 阴 | 1°/-3° | 0.0 mm |
| 2025-12-24 | 阴 | 0°/-3° | 0.0 mm |
| 2025-12-25 | 阴 | 1°/-5° | 0.0 mm |
| 2025-12-26 | 阴 | 1°/-3° | 0.0 mm |
| 2025-12-27 | 阴 | 3°/-3° | 0.0 mm |
| 2025-12-28 | 阴 | 2°/-2° | 0.0 mm |
| 2025-12-29 | 阴 | 4°/-2° | 0.0 mm |
| 2025-12-30 | 小雪 | 2°/-2° | 0.2 mm |
| 2025-12-31 | 中雪 | -1°/-5° | 1.8 mm |
2025年12月定西市共记录 31 天，平均最高 2℃、最低 -2℃，降水日 4 天。