EUGENE, Ore. – The morning fog drapes low over the valley, softening the glow of streetlights and muffling early traffic near I-5. It’s calm and cool now, but Oregon’s dry streak is nearing its end. After several crisp days, a Pacific front will slide inland late Thursday, bringing back the steady showers that mark the heart of fall in the Willamette Valley.
According to the National Weather Service in Portland, areas of dense fog will linger through mid-morning Tuesday before skies clear to mostly sunny conditions. Afternoon highs climb near 65°F, mild for late October, with calm winds and dry air ideal for outdoor chores or harvest runs. By Wednesday, clouds increase again as moisture gathers offshore — the first signal of a wetter pattern setting up for the weekend.
Rain chances return Thursday night, beginning as light showers west of Eugene and spreading inland into Friday morning. The front will drop temperatures to the low 60s, with brisk southwest breezes near 10 mph. Roads may become slick during commutes, particularly on I-5 and OR-126, so drivers should plan for slower travel and reduced visibility in patchy fog and drizzle.
Looking ahead, Friday and Saturday stay mostly cloudy and damp with steady showers, cooler highs near 58°F, and lows in the mid-40s. Sunday keeps that same rhythm — gray skies, light rain, and the steady drumbeat of fall. After a brief stretch of golden afternoons, the Pacific Northwest returns to its familiar, wet tempo — and just in time for Halloween week.
Five-Day Forecast for Eugene, OR:
Tue: 65/46 – Fog early, then mostly sunny.
Wed: 68/48 – Increasing clouds; mild.
Thu: 68/49 – Partly sunny; chance of rain late.
Fri: 63/47 – Showers; breezy at times.
Sat: 58/43 – Cloudy; light rain continues.
