| 日期 | 天气 | 高/低 | 降水 |
|---|---|---|---|
| 2025-09-01 | 阴 | 24°/15° | 0.0 mm |
| 2025-09-02 | 阴 | 31°/14° | 0.0 mm |
| 2025-09-03 | 阴 | 27°/19° | 0.0 mm |
| 2025-09-04 | 阴 | 31°/17° | 0.0 mm |
| 2025-09-05 | 阴 | 24°/17° | 0.0 mm |
| 2025-09-06 | 阴 | 22°/16° | 0.0 mm |
| 2025-09-07 | 阴 | 23°/16° | 0.0 mm |
| 2025-09-08 | 阴 | 24°/13° | 0.0 mm |
| 2025-09-09 | 小毛毛雨 | 25°/16° | 0.4 mm |
| 2025-09-10 | 阴 | 22°/16° | 0.0 mm |
| 2025-09-11 | 阴 | 19°/15° | 0.0 mm |
| 2025-09-12 | 阴 | 22°/14° | 0.0 mm |
| 2025-09-13 | 雾 | 27°/12° | 0.0 mm |
| 2025-09-14 | 中雨 | 19°/13° | 9.5 mm |
| 2025-09-15 | 阴 | 22°/8° | 0.0 mm |
| 2025-09-16 | 晴天 | 30°/13° | 0.0 mm |
| 2025-09-17 | 晴间多云 | 27°/14° | 0.0 mm |
| 2025-09-18 | 阴 | 24°/14° | 0.0 mm |
| 2025-09-19 | 阴 | 26°/11° | 0.0 mm |
| 2025-09-20 | 晴天 | 26°/12° | 0.0 mm |
| 2025-09-21 | 中雨 | 20°/13° | 10.7 mm |
| 2025-09-22 | 雾 | 23°/9° | 0.0 mm |
| 2025-09-23 | 晴天 | 30°/11° | 0.0 mm |
| 2025-09-24 | 晴天 | 27°/14° | 0.0 mm |
| 2025-09-25 | 阴 | 22°/11° | 0.0 mm |
| 2025-09-26 | 阴 | 22°/8° | 0.0 mm |
| 2025-09-27 | 多云 | 26°/9° | 0.0 mm |
| 2025-09-28 | 阴 | 24°/11° | 0.0 mm |
| 2025-09-29 | 毛毛雨 | 17°/13° | 0.7 mm |
| 2025-09-30 | 小毛毛雨 | 21°/11° | 0.8 mm |
2025年09月波特兰共记录 30 天，平均最高 24℃、最低 13℃，降水日 5 天。