Eugene, OR – The calm, fog-covered mornings across the Willamette Valley are about to give way to a fresh round of Pacific rain as cooler, wetter weather returns to Eugene this weekend. According to the National Weather Service (NWS) in Portland, residents should prepare for a stretch of wet days, gusty winds, and a noticeable temperature drop signaling the start of Oregon’s early-November chill.
The Weather System Moving In
Forecasters say patchy fog will linger through Friday morning before skies cloud over. Light showers are expected to arrive by late morning, with rainfall intensifying into the afternoon and evening. Temperatures will stay mild, hovering in the mid-60s, before dropping into the low 50s overnight as steady showers develop.
“The moisture plume off the Pacific will bring a persistent stretch of rain across western Oregon through the weekend,” NWS meteorologists said Thursday.
Residents across Eugene, Springfield, and the southern Willamette Valley are advised to plan for slick roads and limited visibility during the morning and evening commute hours.
Heavier Rain and Wind Expected Saturday
Saturday is projected to bring the heaviest rainfall of the week, with a 90% chance of measurable precipitation and occasional south winds up to 25 mph. The NWS warns that outdoor events — including local Halloween festivities or travel along Interstate 5 — could face periods of reduced visibility and ponding on roadways.
Daytime highs will reach around 61°F, dropping to the upper 40s by Saturday night. Rain is expected to remain consistent through much of the day before tapering off late in the evening.
By Sunday, conditions may slightly improve, with partly cloudy skies and highs near 60°F, offering a short-lived reprieve before another wave of wet weather early next week.
Forecast Models Signal a Colder November Pattern
Meteorologists are monitoring a stronger Pacific trough that could arrive between November 8 and 15, introducing colder air and potential snowfall for Oregon’s Cascade Range and higher mountain passes east of Eugene.
Early projections show temperatures dipping further below average, bringing the season’s first measurable snow to elevations above 4,000 feet and a possible early frost for inland valleys.
“This weekend marks the transition from our mild fall pattern to a much cooler and more unsettled regime,” said an NWS spokesperson. “Residents should expect more frequent showers and chilly mornings as we move into November.”
Preparing for the Wet Weekend Ahead
Local emergency officials remind residents to clear gutters and storm drains, keep rain gear and headlights ready, and use caution on rural roads where water pooling and fallen leaves may create slick conditions.
Travelers heading into higher elevations, such as Santiam Pass or Willamette Pass, should monitor Oregon Department of Transportation (ODOT) updates for changing weather and possible chain requirements as colder air moves in.
Those attending weekend community events are encouraged to bring umbrellas and waterproof layers. Pet owners and gardeners are also advised to prepare for cooler overnight lows and extended damp conditions.
What’s Next for Eugene’s Weather
As the first weekend of November approaches, Eugene’s signature Pacific rain pattern is settling in for the season. Showers will persist into early next week before briefly clearing midweek, followed by another wet system later in the month.
Forecasters say the pattern is typical for western Oregon’s early winter transition, where storms stack across the Pacific, bringing consistent rain, wind, and cooler air through December.
What are your thoughts on Eugene’s changing weather? Share how you’re preparing for the return of Oregon’s rain in the comments below.
