| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2024-09-01 | 阴 | 28°/16° | 0.0 mm |
| 2024-09-02 | 雾 | 19°/14° | 0.0 mm |
| 2024-09-03 | 阴 | 22°/15° | 0.0 mm |
| 2024-09-04 | 雾 | 31°/14° | 0.0 mm |
| 2024-09-05 | 晴间多云 | 36°/15° | 0.0 mm |
| 2024-09-06 | 阴 | 32°/17° | 0.0 mm |
| 2024-09-07 | 阴 | 28°/19° | 0.0 mm |
| 2024-09-08 | 雾 | 27°/16° | 0.0 mm |
| 2024-09-09 | 雾 | 26°/15° | 0.0 mm |
| 2024-09-10 | 雾 | 26°/14° | 0.0 mm |
| 2024-09-11 | 强阵雨 | 19°/13° | 8.3 mm |
| 2024-09-12 | 大毛毛雨 | 19°/14° | 1.5 mm |
| 2024-09-13 | 阴 | 20°/11° | 0.0 mm |
| 2024-09-14 | 中雨 | 21°/13° | 4.0 mm |
| 2024-09-15 | 阴 | 17°/10° | 0.0 mm |
| 2024-09-16 | 阴 | 23°/10° | 0.0 mm |
| 2024-09-17 | 阴 | 16°/11° | 0.0 mm |
| 2024-09-18 | 阴 | 19°/14° | 0.0 mm |
| 2024-09-19 | 阴 | 21°/13° | 0.0 mm |
| 2024-09-20 | 阴 | 20°/11° | 0.0 mm |
| 2024-09-21 | 阴 | 23°/8° | 0.0 mm |
| 2024-09-22 | 阴 | 25°/10° | 0.0 mm |
| 2024-09-23 | 阴 | 25°/15° | 0.0 mm |
| 2024-09-24 | 阴 | 32°/16° | 0.0 mm |
| 2024-09-25 | 中雨 | 20°/13° | 3.6 mm |
| 2024-09-26 | 雾 | 19°/11° | 0.0 mm |
| 2024-09-27 | 小毛毛雨 | 20°/13° | 0.4 mm |
| 2024-09-28 | 阴 | 22°/10° | 0.0 mm |
| 2024-09-29 | 阴 | 18°/8° | 0.0 mm |
| 2024-09-30 | 阴 | 23°/7° | 0.0 mm |
2024年09月波特兰共记录 30 天，平均最高 23℃、最低 12℃，降水日 5 天。