| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 多云 | 21°/11° | 0.0 mm |
| 2026-09-02 | 阴 | 20°/11° | 0.0 mm |
| 2026-09-03 | 中雨 | 17°/12° | 23.1 mm |
| 2026-09-04 | 大雨 | 20°/14° | 20.5 mm |
| 2026-09-05 | 毛毛雨 | 16°/11° | 0.7 mm |
| 2026-09-06 | 小雨 | 11°/10° | 4.8 mm |
| 2026-09-07 | 阴 | 19°/9° | 0.0 mm |
| 2026-09-08 | 阴 | 17°/10° | 0.0 mm |
| 2026-09-09 | 阴 | 14°/5° | 0.0 mm |
| 2026-09-10 | 大雨 | 21°/11° | 38.3 mm |
| 2026-09-11 | 阴 | 16°/9° | 0.0 mm |
| 2026-09-12 | 晴天 | 18°/7° | 0.0 mm |
| 2026-09-13 | 中雨 | 17°/9° | 7.8 mm |
| 2026-09-14 | 雾 | 20°/11° | 0.0 mm |
| 2026-09-15 | 晴间多云 | 18°/8° | 0.0 mm |
| 2026-09-16 | 雾 | 17°/7° | 0.0 mm |
| 2026-09-17 | 雾 | 19°/10° | 0.0 mm |
| 2026-09-18 | 大雨 | 20°/10° | 34.8 mm |
| 2026-09-19 | 晴天 | 15°/6° | 0.0 mm |
| 2026-09-20 | 毛毛雨 | 14°/4° | 1.5 mm |
| 2026-09-21 | 阴 | 16°/9° | 0.0 mm |
| 2026-09-22 | 阴 | 16°/6° | 0.0 mm |
| 2026-09-23 | 晴间多云 | 15°/4° | 0.0 mm |
| 2026-09-24 | 雾 | 19°/4° | 0.0 mm |
| 2026-09-25 | 阴 | 21°/7° | 0.0 mm |
| 2026-09-26 | 阴 | 19°/12° | 0.0 mm |
| 2026-09-27 | 小毛毛雨 | 18°/12° | 0.8 mm |
| 2026-09-28 | 大雨 | 13°/11° | 12.6 mm |
| 2026-09-29 | 中雨 | 17°/12° | 3.6 mm |
| 2026-09-30 | 小毛毛雨 | 16°/11° | 0.4 mm |
2026年09月圣约翰县共记录 30 天，平均最高 17℃、最低 9℃，降水日 12 天。