Portland/ Weather & Environment

Portland Basks in One Last Sunny Day Before Brief Rain Tease

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Published on September 28, 2026
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Portland is starting Monday with mostly clear skies and light winds, but the afternoon should feel much milder. The city is headed for a high near 70 under mostly sunny skies, making for a classic crisp-morning, easy-afternoon setup. Winds will stay barely noticeable.

Some sheltered spots around the metro and nearby valleys could see patchy morning fog, but it should fade by late morning. Monday should remain dry, with light winds. For local forecasts, see the National Weather Service.

Tuesday Brings A Small Rain Chance

Tuesday’s forecast calls for a high near 66, with rain possible after 5 a.m. Most of the metro should stay dry, even as the odds increase farther north and closer to the coast and foothills.

The rain chance may linger through early Wednesday. No land-based watches, warnings or advisories are listed for Portland, but late-day outdoor plans may want a light jacket and a backup option.

Dry Weather Returns For The Rest Of The Week

Wednesday turns partly sunny with a high in the 60s, followed by partly sunny skies and a high in the 60s Thursday. Friday should be partly sunny with a high near 68, while the weekend looks especially comfortable, with highs near 65 Saturday and 70 Sunday.

In short, Portland gets one more clean, bright day before rain becomes possible Tuesday. After that, the forecast settles into a dry stretch that should keep fall outdoor plans on friendly terms with the weather.