| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2023-12-01 | 小毛毛雨 | 8°/5° | 0.7 mm |
| 2023-12-02 | 多云 | 9°/3° | 0.2 mm |
| 2023-12-03 | 小毛毛雨 | 13°/5° | 2.7 mm |
| 2023-12-04 | 阴 | 11°/4° | 0.0 mm |
| 2023-12-05 | 中雨 | 11°/7° | 5.3 mm |
| 2023-12-06 | 阴 | 13°/7° | 0.0 mm |
| 2023-12-07 | 毛毛雨 | 13°/5° | 1.7 mm |
| 2023-12-08 | 晴天 | 13°/4° | 0.0 mm |
| 2023-12-09 | 阴 | 16°/8° | 0.0 mm |
| 2023-12-10 | 阴 | 18°/10° | 0.0 mm |
| 2023-12-11 | 中雨 | 14°/11° | 11.2 mm |
| 2023-12-12 | 中雨 | 16°/9° | 5.2 mm |
| 2023-12-13 | 晴间多云 | 12°/7° | 0.0 mm |
| 2023-12-14 | 大毛毛雨 | 16°/7° | 1.8 mm |
| 2023-12-15 | 毛毛雨 | 20°/10° | 2.8 mm |
| 2023-12-16 | 毛毛雨 | 16°/7° | 4.9 mm |
| 2023-12-17 | 小雪 | 7°/1° | 0.7 mm |
| 2023-12-18 | 阴 | 5°/0° | 0.0 mm |
| 2023-12-19 | 中雪 | 7°/3° | 0.8 mm |
| 2023-12-20 | 小毛毛雨 | 9°/4° | 1.5 mm |
| 2023-12-21 | 小雪 | 5°/1° | 1.6 mm |
| 2023-12-22 | 小毛毛雨 | 3°/0° | 1.4 mm |
| 2023-12-23 | 小毛毛雨 | 5°/0° | 0.0 mm |
| 2023-12-24 | 中雪 | 9°/0° | 2.1 mm |
| 2023-12-25 | 小毛毛雨 | 8°/2° | 4.2 mm |
| 2023-12-26 | 阴 | 10°/0° | 0.0 mm |
| 2023-12-27 | 阴 | 12°/5° | 0.0 mm |
| 2023-12-28 | 晴间多云 | 12°/4° | 0.1 mm |
| 2023-12-29 | 晴间多云 | 12°/5° | 0.2 mm |
| 2023-12-30 | 小毛毛雨 | 13°/5° | 0.5 mm |
| 2023-12-31 | 毛毛雨 | 13°/8° | 5.3 mm |
2023年12月今治市共记录 31 天，平均最高 11℃、最低 4℃，降水日 22 天。