Portland Enjoys Sunny End to Summer, Cooler Fall Ahead
Portland Enjoys Sunny End to Summer, Cooler Fall Ahead
US · Published Sep 21, 2026
As Portland, Oregon, approaches the astronomical start of fall on Tuesday, September 22, residents are enjoying a final weekend of warm summer weather.
Daytime highs are expected to reach 81°F (27°C) on Sunday, with partly sunny skies in the morning giving way to clear, sunny conditions in the afternoon.

Impact & Risks

The pleasant weather provides an excellent opportunity for outdoor activities during the final days of summer. However, residents should prepare for a cooling trend as the week progresses, with highs dropping to the low 70s°F (21°C) by midweek and further cooling to the mid-60s°F (18°C) by Friday. Rain chances increase later in the week, particularly between Thursday night and Friday, which could impact outdoor plans. While no severe weather is expected, those sensitive to cooler temperatures should plan accordingly.

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