| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2026-05-01 | 中雨 | 16°/11° | 20.3 mm |
| 2026-05-02 | 晴间多云 | 23°/9° | 0.0 mm |
| 2026-05-03 | 阴 | 26°/10° | 0.0 mm |
| 2026-05-04 | 阴 | 27°/14° | 0.0 mm |
| 2026-05-05 | 阴 | 28°/21° | 0.0 mm |
| 2026-05-06 | 阴 | 24°/16° | 0.0 mm |
| 2026-05-07 | 阴 | 19°/15° | 0.0 mm |
| 2026-05-08 | 阴 | 25°/14° | 0.0 mm |
| 2026-05-09 | 小毛毛雨 | 31°/21° | 0.4 mm |
| 2026-05-10 | 大雨 | 31°/19° | 19.4 mm |
| 2026-05-11 | 小毛毛雨 | 26°/17° | 0.4 mm |
| 2026-05-12 | 晴间多云 | 28°/15° | 0.0 mm |
| 2026-05-13 | 晴天 | 31°/16° | 0.0 mm |
| 2026-05-14 | 多云 | 31°/18° | 0.0 mm |
| 2026-05-15 | 阴 | 30°/20° | 0.0 mm |
| 2026-05-16 | 阴 | 30°/21° | 0.0 mm |
| 2026-05-17 | 阵雨 | 29°/24° | 1.8 mm |
| 2026-05-18 | 阵雨 | 32°/24° | 2.8 mm |
| 2026-05-19 | 雷阵雨 | 33°/19° | 51.5 mm |
| 2026-05-20 | 小雨 | 27°/19° | 2.2 mm |
| 2026-05-21 | 阵雨 | 26°/19° | 2.9 mm |
| 2026-05-22 | 雾 | 29°/17° | 0.0 mm |
| 2026-05-23 | 阴 | 28°/18° | 0.0 mm |
| 2026-05-24 | 阴 | 29°/19° | 0.0 mm |
| 2026-05-25 | 大雨 | 29°/18° | 58.0 mm |
| 2026-05-26 | 小雨 | 29°/19° | 1.4 mm |
| 2026-05-27 | 大雨 | 25°/17° | 13.3 mm |
| 2026-05-28 | 雾 | 30°/17° | 0.0 mm |
| 2026-05-29 | 雾 | 31°/22° | 0.0 mm |
| 2026-05-30 | 阴 | 29°/22° | 0.0 mm |
| 2026-05-31 | 阴 | 30°/21° | 0.0 mm |
2026年05月威廉森共记录 31 天，平均最高 27℃、最低 17℃，降水日 12 天。