| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-01-01 | 小阵雪 | 1°/-4° | 0.7 mm |
| 2026-01-02 | 小阵雪 | -2°/-5° | 5.6 mm |
| 2026-01-03 | 小阵雪 | 0°/-8° | 1.1 mm |
| 2026-01-04 | 阴 | 6°/-6° | 0.0 mm |
| 2026-01-05 | 毛毛雨 | 5°/-2° | 1.7 mm |
| 2026-01-06 | 小阵雪 | 2°/-3° | 0.9 mm |
| 2026-01-07 | 阴 | 6°/-2° | 0.0 mm |
| 2026-01-08 | 小阵雪 | 1°/-4° | 3.9 mm |
| 2026-01-09 | 小毛毛雨 | 5°/-6° | 0.1 mm |
| 2026-01-10 | 阴 | 8°/-3° | 0.0 mm |
| 2026-01-11 | 小阵雪 | 1°/-8° | 4.5 mm |
| 2026-01-12 | 阴 | 5°/-10° | 0.0 mm |
| 2026-01-13 | 小毛毛雨 | 7°/-3° | 0.6 mm |
| 2026-01-14 | 阴 | 3°/-5° | 0.0 mm |
| 2026-01-15 | 阴 | 10°/-2° | 0.0 mm |
| 2026-01-16 | 阴 | 12°/1° | 0.0 mm |
| 2026-01-17 | 晴天 | 13°/2° | 0.0 mm |
| 2026-01-18 | 小毛毛雨 | 12°/1° | 0.1 mm |
| 2026-01-19 | 小毛毛雨 | 13°/3° | 0.1 mm |
| 2026-01-20 | 小阵雪 | 5°/-6° | 1.2 mm |
| 2026-01-21 | 阴 | 1°/-7° | 0.0 mm |
| 2026-01-22 | 小雪 | -3°/-8° | 0.1 mm |
| 2026-01-23 | 小雪 | 0°/-8° | 0.2 mm |
| 2026-01-24 | 中雪 | 0°/-7° | 2.9 mm |
| 2026-01-25 | 小毛毛雨 | -1°/-8° | 0.2 mm |
| 2026-01-26 | 阴 | 5°/-7° | 0.0 mm |
| 2026-01-27 | 阴 | 4°/-5° | 0.0 mm |
| 2026-01-28 | 小毛毛雨 | 2°/-5° | 0.1 mm |
| 2026-01-29 | 小雪 | 1°/-6° | 0.2 mm |
| 2026-01-30 | 阴 | 2°/-7° | 0.0 mm |
| 2026-01-31 | 阴 | 2°/-5° | 0.0 mm |
2026年01月土佐市共记录 31 天，平均最高 4℃、最低 -4℃，降水日 18 天。