Eugene, Oregon – A sunny streak is set to stretch across western Oregon, bringing rising temperatures and summer-like conditions to the Eugene area by Thursday. After a mild and mostly cloudy Wednesday, conditions will begin to warm and clear, with afternoon highs nearing 76°F and sunshine breaking through by late in the day.
According to the National Weather Service in Portland, skies will turn partly sunny on Thursday with calm winds shifting to the northwest at 6 mph. While no hazardous conditions are forecast, residents should prepare for rapidly warming temperatures as the weekend approaches. Friday brings a high of 78°F under mostly sunny skies, and the heat builds sharply Saturday through Monday — with Sunday’s high peaking at 89°F.
Locals traveling along I-5 through Lane County should expect high sun exposure and dry pavement conditions from Friday through early next week. This trend may lead to heat-related fatigue or engine strain for unprepared vehicles. Officials recommend carrying water, limiting outdoor activity in the peak afternoon hours, and checking AC units or fans in advance.
The warm spell marks Eugene’s most sustained heat stretch of the season so far, with highs remaining near 89°F through Monday. While skies stay clear, UV levels will also increase. Sunscreen and shaded rest breaks are key, especially for outdoor workers and families enjoying summer recreation.
Five-Day Forecast: Eugene, OR (June 25–30)
- Wednesday: Mostly cloudy, high near 76°F
- Thursday: Partly sunny, high near 76°F
- Friday: Mostly sunny, high near 78°F
- Saturday: Sunny and warmer, high near 83°F
- Sunday: Sunny and hot, high near 89°F
- Monday: Continued heat, high near 89°F
