Eugene, OR – A cold snap kicked off Thursday morning with widespread frost across the Willamette Valley. But the bigger weather shift is still coming: rain returns by Saturday night, bringing a classic Pacific Northwest fall pattern back to life.
According to the National Weather Service in Portland, Thursday’s Frost Advisory affected most lowland areas from Eugene to Hillsboro, with temperatures dipping to 32°F in colder valleys. Residents were urged to protect sensitive plants, and early risers on I-5 and Highway 126 encountered frosty conditions and windshield delays.
The freeze threat ends, but don’t pack up those jackets just yet. Saturday evening brings a sharp shift in weather, as an 80% chance of rain moves into Eugene and surrounding cities. Storms may follow into Sunday, with isolated thunder possible. Highs will stay in the upper 50s, with chilly lows near 44°F through Sunday night.
Friday and Saturday morning remain dry and mostly sunny—ideal for pumpkin patch visits, yard prep, or fall hiking. Rain is expected to begin after 6 p.m. Saturday, continuing steadily into Sunday. Outdoor weekend plans should shift earlier in the day to avoid wet and windy periods.
No major flooding is expected, but locally heavy rainfall could impact visibility on I-5 and slow Sunday travel.
Five-Day Weather Outlook for Eugene, OR:
- Friday: Patchy fog, then sunny, high of 65°F
- Saturday: Mostly sunny, high near 69°F
- Sunday: Rain and thunderstorms likely, high near 59°F
- Monday: Slight chance of rain, high of 61°F
- Tuesday: Partly cloudy, high near 62°F
