Portland Weather Turns Cooler After Tuesday Highs of 82-85

Portland weather turns very warm Tuesday, with highs of 82-85 degrees before a Pacific cold front brings cooler, showery weather Wednesday. The warm stretch is expected to peak early to mid-afternoon, then ease by about 6 pm as marine air pushes inland.

Tuesday in Portland

Temperatures are expected to rise 3-5 degrees Tuesday, and western valleys should peak between 78 and 85 degrees. No hot weather is expected west of the Cascades, but mainly sunny conditions are expected through early afternoon before a breezy westerly wind arrives mid to late afternoon with gusts to 30 mph.

A gusty west, southwest or northwest wind is expected after about 2 pm along the coast and inland gaps. By 6 pm, the very warm temperatures are expected to be finished, leaving the region on a short path toward cooler air and increasing cloud cover.

Wednesday and Portland

After sunset Tuesday or overnight, a shower or thundershower could develop ahead of the front. Wednesday is expected to start with morning rain, then scattered showers, with afternoon temperatures about 20 degrees cooler. The shift follows a period of unusually dry weather since late April.

The change does not stop there. Another cool system is expected to move into the region Thursday night through early Saturday, and the cooler, wetter pattern is expected to last 5-7 days. For people planning around Portland weather, Tuesday is the warm window; Wednesday is the day for rain and a much cooler afternoon.