| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 中雪 | 3°/-4° | 20.2 mm |
| 2023-12-02 | 中雪 | 1°/-2° | 31.2 mm |
| 2023-12-03 | 中雪 | 4°/-1° | 26.3 mm |
| 2023-12-04 | 小雪 | 5°/-1° | 0.1 mm |
| 2023-12-05 | 阴 | 9°/1° | 0.0 mm |
| 2023-12-06 | 阴 | 10°/3° | 0.2 mm |
| 2023-12-07 | 毛毛雨 | 9°/1° | 20.8 mm |
| 2023-12-08 | 小毛毛雨 | 9°/1° | 0.0 mm |
| 2023-12-09 | 阴 | 13°/4° | 0.0 mm |
| 2023-12-10 | 毛毛雨 | 11°/6° | 0.8 mm |
| 2023-12-11 | 毛毛雨 | 8°/5° | 0.5 mm |
| 2023-12-12 | 中雨 | 9°/4° | 25.7 mm |
| 2023-12-13 | 小毛毛雨 | 6°/1° | 1.6 mm |
| 2023-12-14 | 阴 | 7°/1° | 0.0 mm |
| 2023-12-15 | 小雨 | 14°/5° | 16.3 mm |
| 2023-12-16 | 中雨 | 13°/5° | 31.9 mm |
| 2023-12-17 | 中雪 | 5°/-2° | 44.5 mm |
| 2023-12-18 | 中雪 | 0°/-4° | 22.2 mm |
| 2023-12-19 | 小雪 | 4°/-4° | 0.4 mm |
| 2023-12-20 | 中雪 | 3°/0° | 18.1 mm |
| 2023-12-21 | 大雪 | 0°/-5° | 65.3 mm |
| 2023-12-22 | 大雪 | -1°/-3° | 83.0 mm |
| 2023-12-23 | 中雪 | 0°/-3° | 34.6 mm |
| 2023-12-24 | 小雪 | 3°/-5° | 2.7 mm |
| 2023-12-25 | 中雪 | 2°/0° | 13.8 mm |
| 2023-12-26 | 小毛毛雨 | 6°/-2° | 0.5 mm |
| 2023-12-27 | 中雪 | 3°/-3° | 19.6 mm |
| 2023-12-28 | 小毛毛雨 | 5°/-4° | 0.0 mm |
| 2023-12-29 | 毛毛雨 | 4°/0° | 2.5 mm |
| 2023-12-30 | 阴 | 7°/0° | 0.0 mm |
| 2023-12-31 | 中雪 | 7°/2° | 47.4 mm |
2023年12月妙高市共记录 31 天，平均最高 5℃、最低 0℃，降水日 27 天。