Portland Enjoys Sunny End to Summer, Cooler Fall Ahead
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. Temperatures will gradually cool as the week progresses, with highs in the upper 70s°F (25°C) on Monday and mid-70s°F (23°C) on Tuesday. The fall equinox officially begins at 5:05 p.m. on Tuesday, marking the seasonal transition. The workweek is forecasted to remain dry and warm through midweek, with no significant rainfall expected until Thursday night or Friday.