| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 毛毛雨 | 6°/2° | 8.1 mm |
| 2023-12-02 | 小毛毛雨 | 7°/2° | 6.5 mm |
| 2023-12-03 | 毛毛雨 | 8°/2° | 3.2 mm |
| 2023-12-04 | 阴 | 11°/4° | 0.3 mm |
| 2023-12-05 | 小毛毛雨 | 11°/4° | 0.0 mm |
| 2023-12-06 | 小毛毛雨 | 14°/6° | 0.0 mm |
| 2023-12-07 | 小毛毛雨 | 11°/6° | 2.7 mm |
| 2023-12-08 | 多云 | 14°/4° | 0.0 mm |
| 2023-12-09 | 阴 | 17°/7° | 0.0 mm |
| 2023-12-10 | 小毛毛雨 | 17°/10° | 1.2 mm |
| 2023-12-11 | 中雨 | 11°/8° | 15.3 mm |
| 2023-12-12 | 中雨 | 12°/8° | 13.8 mm |
| 2023-12-13 | 小毛毛雨 | 10°/4° | 0.6 mm |
| 2023-12-14 | 小毛毛雨 | 12°/4° | 1.3 mm |
| 2023-12-15 | 小雨 | 19°/10° | 15.3 mm |
| 2023-12-16 | 小雨 | 15°/3° | 9.0 mm |
| 2023-12-17 | 中雪 | 3°/0° | 10.7 mm |
| 2023-12-18 | 小雪 | 3°/0° | 16.6 mm |
| 2023-12-19 | 毛毛雨 | 6°/1° | 0.4 mm |
| 2023-12-20 | 毛毛雨 | 6°/2° | 2.7 mm |
| 2023-12-21 | 中雪 | 1°/-2° | 7.2 mm |
| 2023-12-22 | 中雪 | 0°/-2° | 15.5 mm |
| 2023-12-23 | 小雪 | 3°/-1° | 15.9 mm |
| 2023-12-24 | 小毛毛雨 | 6°/-1° | 2.2 mm |
| 2023-12-25 | 毛毛雨 | 6°/0° | 3.2 mm |
| 2023-12-26 | 小毛毛雨 | 8°/0° | 0.2 mm |
| 2023-12-27 | 小毛毛雨 | 7°/3° | 1.4 mm |
| 2023-12-28 | 毛毛雨 | 10°/2° | 0.5 mm |
| 2023-12-29 | 小毛毛雨 | 9°/4° | 0.2 mm |
| 2023-12-30 | 阴 | 12°/3° | 0.0 mm |
| 2023-12-31 | 小雨 | 11°/6° | 29.3 mm |
2023年12月岩美町共记录 31 天，平均最高 9℃、最低 3℃，降水日 28 天。