Weather
Oregon Weather Oct. 17–21: Eugene Drops 20° as Rain Returns
A cooler, potentially wetter stretch is approaching Oregon's southern Willamette Valley, where Eugene is expected to lose 20 degrees of daytime warmth between Friday and Monday as rain chances return
By Sophie Caldwell · 2026-10-14T11:32:07.318Z
A cooler, potentially wetter stretch is approaching Oregon's southern Willamette Valley, where Eugene is expected to lose 20 degrees of daytime warmth between Friday and Monday as rain chances return during the weekend.
According to the National Weather Service forecast for Eugene, temperatures will reach approximately 78 degrees Friday before falling into the mid 60s Saturday and upper 50s Monday. Rain becomes possible Saturday morning, with additional chances developing Sunday night into early next week.
The shift marks a noticeable change from the sunny, warmer conditions expected late this week.
Weekend Brings Cooler Temperatures and Rain Chances Saturday begins with a 20% chance of rain before 11 a.m., followed by gradually improving skies as clouds give way to mostly sunny conditions.
Afternoon temperatures are expected to reach just 65 degrees, a 13 degree decline from Friday's projected high.
Saturday night will bring partly cloudy skies and temperatures falling near 42 degrees.
Sunday remains relatively cool, with mostly sunny skies and a high near 63 degrees. However, clouds are expected to increase Sunday night, when another slight chance of rain develops after 11 p.m.
For residents planning outdoor activities, Saturday morning and late Sunday night represent the first periods with precipitation chances in the supplied weekend outlook.
Monday Brings the Coolest Afternoon The cooling trend continues Monday, when Eugene is expected to reach only 58 degrees under cloudy skies.
That would represent a 20 degree decline from Friday's high and the coolest afternoon in the supplied extended forecast.
Rain remains possible Monday and Monday night, with overnight temperatures falling to approximately 41 degrees.
Tuesday offers a modest temperature recovery, with a high near 60 degrees. Partly sunny skies are expected, although a slight chance of rain remains.
The forecast does not provide rainfall totals or indicate widespread flooding, severe thunderstorms or damaging winds for Eugene.
NOAA's separate national outlook highlights a strong cooling pattern across the central United States late this week, but does not establish a connection to Eugene's weekend weather changes.
The Eugene forecast supports a cooler pattern with intermittent rain chances in the southern Willamette Valley. Conditions elsewhere in Oregon may differ.
Five Day Weather Outlook: Oct. 17–21 Temperatures below represent National Weather Service forecasts for Eugene, Oregon, in Lane County. They should not be interpreted as statewide temperature predictions.
Saturday, Oct. 17: A 20% chance of rain before 11 a.m. Cloudy early, becoming mostly sunny. High near 65°. Partly cloudy overnight, with a low near 42°. Sunday, Oct. 18: Mostly sunny, with a high near 63°. Mostly cloudy overnight, with a slight chance of rain after 11 p.m. Low near 42°. Monday, Oct. 19: Cloudy with a chance of rain. High near 58°. Rain remains possible overnight, with a low near 41°. Tuesday, Oct. 20: Partly sunny with a slight chance of rain. High near 60°. Overnight conditions were not provided. Wednesday, Oct. 21: Forecast details were not available in the supplied National Weather Service outlook.