EUGENE, Ore. – Dawn breaks dim and hazy over the southern Willamette Valley, where thick fog clings to open fields and quiet roads. Beneath the gray, a moisture-rich Pacific system is already advancing — poised to drench western Oregon through Thursday and usher in a damp, cool stretch ahead of Thanksgiving travel season.
Thursday’s system will mark the first widespread rain event of the week, following several foggy mornings. The National Weather Service in Portland expects rain to begin early in the day, becoming steady through afternoon with highs near 64°F. Rainfall totals between a quarter and half an inch are likely across Lane County, with heavier pockets along the Coast Range. Light southwesterly winds, up to 10 mph, could make for slick conditions on I-5, particularly near Eugene and Springfield during peak commuting hours.
By Friday, another frontal wave brings additional showers and a brief cooldown, with highs dropping into the upper 50s. The pattern remains unsettled into Saturday, featuring more scattered rain and limited breaks in the clouds. Although no flooding concerns are expected, ponding on local roads and wet leaves may pose minor hazards.
Looking into early next week, models hint at a persistent Pacific jet keeping Oregon damp through Monday before gradual clearing midweek. Temperatures will stay seasonal — cool mornings near 45°F, highs around 60°F — keeping conditions favorable for early holiday travel and last-minute outdoor prep before colder air arrives later in November.
Keep headlights on in the fog, allow extra braking distance, and plan around reduced visibility during morning commutes. The region’s November rain rhythm has returned — steady, gray, and essential.
Five-Day Outlook for Eugene, OR:
Thu: 64/47 – Rain likely; light south winds.
Fri: 58/49 – Showers; mild.
Sat: 58/46 – Rain likely; breezy.
Sun: 57/44 – Cloudy; scattered rain.
Mon: 53/38 – Mostly cloudy; few showers.
