Oregon – Headlights barely cut through thick gray air across Eugene this morning as dense fog grips the southern Willamette Valley. Visibility has dropped to a quarter mile or less in spots, slowing traffic along Interstate 5 and Highway 99.
According to the National Weather Service in Portland, a Dense Fog Advisory remains in effect for the Lane County lowlands until noon. Widespread frost formed earlier with temperatures hovering near 34 degrees. Drivers should slow down, increase following distance, and use low-beam headlights. Pedestrians and cyclists need reflective gear in this low visibility.
Fog gradually lifts late this morning. Skies turn mostly sunny by afternoon with highs near 55. Calm winds shift north around 6 mph.
Clouds rebuild tonight with patchy frost possible again as temperatures dip near 34. Saturday brings a shift toward wetter Weekend Weather. Rain becomes likely after 4 p.m. with highs near 51. Roads will turn damp by evening.
Rain continues into Saturday night and Sunday, with precipitation chances between 50 and 60 percent. Highs reach the mid-50s Sunday. Patchy fog may redevelop during lighter showers.
Monday offers partial improvement with a slight rain chance and highs near 59 as March begins. More rain chances return Tuesday afternoon and midweek.
The 6–10 day outlook leans milder overall, hinting at gradual Spring Vibes next week despite periodic rain.
Five Day Outlook for Eugene, Oregon:
Today: Morning fog, then mostly sunny, high 55.
Saturday: Rain likely after 4 p.m., high 51.
Sunday: Chance of rain, high 56.
Monday: Slight chance of rain, high 59.
Tuesday: Chance of rain after 4 p.m., high 59.
