| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-04-01 | 中雨 | 11°/6° | 33.3 mm |
| 2026-04-02 | 大雨 | 7°/2° | 16.3 mm |
| 2026-04-03 | 阴 | 15°/1° | 0.0 mm |
| 2026-04-04 | 阵雨 | 11°/7° | 17.3 mm |
| 2026-04-05 | 小毛毛雨 | 20°/9° | 1.5 mm |
| 2026-04-06 | 小毛毛雨 | 19°/8° | 0.1 mm |
| 2026-04-07 | 毛毛雨 | 17°/0° | 2.6 mm |
| 2026-04-08 | 晴天 | 12°/-1° | 0.0 mm |
| 2026-04-09 | 小毛毛雨 | 17°/3° | 0.2 mm |
| 2026-04-10 | 中雨 | 14°/9° | 15.7 mm |
| 2026-04-11 | 阴 | 19°/10° | 0.0 mm |
| 2026-04-12 | 阴 | 17°/5° | 0.0 mm |
| 2026-04-13 | 阴 | 21°/9° | 0.0 mm |
| 2026-04-14 | 小毛毛雨 | 19°/9° | 0.3 mm |
| 2026-04-15 | 中雨 | 17°/10° | 13.4 mm |
| 2026-04-16 | 小毛毛雨 | 16°/7° | 0.9 mm |
| 2026-04-17 | 阴 | 17°/4° | 0.0 mm |
| 2026-04-18 | 阴 | 21°/6° | 0.0 mm |
| 2026-04-19 | 阴 | 21°/9° | 0.0 mm |
| 2026-04-20 | 阴 | 19°/9° | 0.0 mm |
| 2026-04-21 | 阵雨 | 18°/6° | 4.2 mm |
| 2026-04-22 | 阴 | 20°/5° | 0.0 mm |
| 2026-04-23 | 中阵雨 | 13°/8° | 27.3 mm |
| 2026-04-24 | 毛毛雨 | 15°/7° | 1.4 mm |
| 2026-04-25 | 阴 | 15°/4° | 0.0 mm |
| 2026-04-26 | 阴 | 17°/5° | 0.0 mm |
| 2026-04-27 | 中阵雨 | 12°/6° | 14.3 mm |
| 2026-04-28 | 阴 | 20°/6° | 0.0 mm |
| 2026-04-29 | 阵雨 | 18°/7° | 3.5 mm |
| 2026-04-30 | 小毛毛雨 | 10°/7° | 1.3 mm |
2026年04月佐久市共记录 30 天，平均最高 16℃、最低 6℃，降水日 17 天。