| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-09-01 | 多云 | 34°/21° | 0.0 mm |
| 2026-09-02 | 晴间多云 | 34°/21° | 0.0 mm |
| 2026-09-03 | 多云 | 35°/22° | 0.0 mm |
| 2026-09-04 | 阴 | 35°/22° | 0.0 mm |
| 2026-09-05 | 阴 | 35°/22° | 0.0 mm |
| 2026-09-06 | 阴 | 34°/21° | 0.0 mm |
| 2026-09-07 | 阴 | 29°/20° | 0.0 mm |
| 2026-09-08 | 中阵雨 | 31°/21° | 6.8 mm |
| 2026-09-09 | 晴间多云 | 32°/22° | 0.0 mm |
| 2026-09-10 | 阴 | 32°/22° | 0.0 mm |
| 2026-09-11 | 阴 | 33°/20° | 0.0 mm |
| 2026-09-12 | 阴 | 31°/22° | 0.0 mm |
| 2026-09-13 | 阴 | 33°/18° | 0.0 mm |
| 2026-09-14 | 阴 | 32°/21° | 0.0 mm |
| 2026-09-15 | 晴间多云 | 35°/21° | 0.0 mm |
| 2026-09-16 | 阴 | 35°/22° | 0.0 mm |
| 2026-09-17 | 多云 | 35°/22° | 0.0 mm |
| 2026-09-18 | 晴间多云 | 36°/21° | 0.0 mm |
| 2026-09-19 | 多云 | 36°/20° | 0.0 mm |
| 2026-09-20 | 阴 | 34°/22° | 0.0 mm |
| 2026-09-21 | 阴 | 35°/21° | 0.0 mm |
| 2026-09-22 | 阴 | 25°/18° | 0.0 mm |
| 2026-09-23 | 雾 | 20°/16° | 0.0 mm |
| 2026-09-24 | 雾 | 26°/17° | 0.0 mm |
| 2026-09-25 | 雾 | 25°/13° | 0.0 mm |
| 2026-09-26 | 阴 | 26°/10° | 0.0 mm |
| 2026-09-27 | 阴 | 26°/13° | 0.0 mm |
| 2026-09-28 | 多云 | 26°/8° | 0.0 mm |
| 2026-09-29 | 多云 | 29°/9° | 0.0 mm |
| 2026-09-30 | 阴 | 32°/12° | 0.0 mm |
2026年09月威廉森共记录 30 天，平均最高 31℃、最低 18℃，降水日 1 天。