| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-12-01 | 小毛毛雨 | 16°/10° | 1.9 mm |
| 2025-12-02 | 小毛毛雨 | 12°/8° | 2.7 mm |
| 2025-12-03 | 小阵雪 | 8°/1° | 10.4 mm |
| 2025-12-04 | 小阵雪 | 4°/1° | 9.0 mm |
| 2025-12-05 | 小阵雪 | 5°/1° | 8.2 mm |
| 2025-12-06 | 阴 | 10°/0° | 0.0 mm |
| 2025-12-07 | 阴 | 13°/5° | 0.0 mm |
| 2025-12-08 | 毛毛雨 | 11°/6° | 2.1 mm |
| 2025-12-09 | 小毛毛雨 | 9°/4° | 0.4 mm |
| 2025-12-10 | 小毛毛雨 | 9°/4° | 0.2 mm |
| 2025-12-11 | 阵雨 | 13°/4° | 7.2 mm |
| 2025-12-12 | 小阵雪 | 5°/1° | 9.7 mm |
| 2025-12-13 | 小毛毛雨 | 8°/2° | 0.2 mm |
| 2025-12-14 | 小阵雪 | 8°/5° | 12.8 mm |
| 2025-12-15 | 小阵雪 | 7°/5° | 7.9 mm |
| 2025-12-16 | 小毛毛雨 | 10°/2° | 0.4 mm |
| 2025-12-17 | 小雨 | 8°/4° | 12.7 mm |
| 2025-12-18 | 大毛毛雨 | 9°/4° | 2.1 mm |
| 2025-12-19 | 阴 | 14°/4° | 0.0 mm |
| 2025-12-20 | 阴 | 17°/8° | 0.0 mm |
| 2025-12-21 | 中阵雨 | 13°/6° | 20.0 mm |
| 2025-12-22 | 毛毛雨 | 7°/3° | 2.7 mm |
| 2025-12-23 | 阴 | 12°/1° | 0.0 mm |
| 2025-12-24 | 小雨 | 12°/7° | 11.7 mm |
| 2025-12-25 | 小阵雪 | 10°/3° | 27.6 mm |
| 2025-12-26 | 大阵雪 | 3°/0° | 28.2 mm |
| 2025-12-27 | 小阵雪 | 4°/0° | 11.7 mm |
| 2025-12-28 | 小毛毛雨 | 7°/1° | 1.9 mm |
| 2025-12-29 | 阴 | 10°/2° | 0.0 mm |
| 2025-12-30 | 毛毛雨 | 9°/3° | 1.5 mm |
| 2025-12-31 | 小阵雪 | 4°/2° | 4.5 mm |
2025年12月岩美町共记录 31 天，平均最高 9℃、最低 3℃，降水日 25 天。