| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 大毛毛雨 | 28°/23° | 5.6 mm |
| 2026-09-02 | 中阵雨 | 29°/23° | 14.9 mm |
| 2026-09-03 | 阵雨 | 28°/22° | 9.0 mm |
| 2026-09-04 | 阵雨 | 27°/22° | 13.8 mm |
| 2026-09-05 | 阵雨 | 28°/22° | 8.7 mm |
| 2026-09-06 | 中阵雨 | 26°/22° | 23.9 mm |
| 2026-09-07 | 阵雨 | 27°/22° | 12.7 mm |
| 2026-09-08 | 大毛毛雨 | 29°/22° | 4.5 mm |
| 2026-09-09 | 阵雨 | 27°/22° | 11.8 mm |
| 2026-09-10 | 阵雨 | 27°/22° | 13.6 mm |
| 2026-09-11 | 大毛毛雨 | 27°/22° | 7.9 mm |
| 2026-09-12 | 毛毛雨 | 29°/22° | 6.2 mm |
| 2026-09-13 | 阵雨 | 27°/22° | 11.1 mm |
| 2026-09-14 | 阵雨 | 27°/22° | 15.2 mm |
| 2026-09-15 | 中阵雨 | 26°/22° | 36.9 mm |
| 2026-09-16 | 大毛毛雨 | 28°/22° | 5.7 mm |
| 2026-09-17 | 阵雨 | 27°/22° | 9.4 mm |
| 2026-09-18 | 毛毛雨 | 28°/23° | 6.9 mm |
| 2026-09-19 | 小毛毛雨 | 26°/22° | 2.3 mm |
| 2026-09-20 | 小毛毛雨 | 28°/22° | 1.0 mm |
| 2026-09-21 | 阵雨 | 26°/23° | 21.6 mm |
| 2026-09-22 | 强阵雨 | 23°/23° | 219.0 mm |
| 2026-09-23 | 小毛毛雨 | 29°/22° | 1.8 mm |
| 2026-09-24 | 小毛毛雨 | 29°/21° | 1.6 mm |
| 2026-09-25 | 阵雨 | 30°/21° | 10.8 mm |
| 2026-09-26 | 阵雨 | 27°/22° | 8.2 mm |
| 2026-09-27 | 阵雨 | 27°/22° | 12.2 mm |
| 2026-09-28 | 毛毛雨 | 27°/22° | 2.2 mm |
| 2026-09-29 | 小毛毛雨 | 29°/21° | 0.1 mm |
| 2026-09-30 | 小毛毛雨 | 26°/23° | 2.1 mm |
2026年09月圣约翰河共记录 30 天，平均最高 27℃、最低 22℃，降水日 30 天。