Oregon – Headlights fade into gray walls this morning as dense fog settles across the southern Willamette Valley. Streetlights glow softly, and moisture beads on windshields near Eugene. Visibility drops fast, especially near rivers, low fields, and sheltered roads.
The National Weather Service has issued a Dense Fog Advisory until 9 a.m. Visibility may fall to one-quarter mile or less. Drivers should expect sudden changes, even block to block. Wet pavement and muted sound add to the danger during early travel hours. Plan extra time and slow down, especially along I-5 and local connectors.
Fog remains uneven but stubborn through mid-morning. Some areas improve briefly, while others stay socked in. Conditions gradually lift later this morning as clouds thin. Highs reach near 50 degrees, keeping the air cool but calmer by afternoon.
Tonight turns colder. Clearer breaks allow temperatures to dip near 31 degrees, raising frost concerns by early Wednesday. Any lingering moisture could refreeze, creating slick patches on bridges and shaded roads. Use caution during late-night and early-morning travel.
Wednesday brings a brighter stretch. Sunshine returns, and highs climb near 51 degrees. That calm window continues into Thursday, though patchy fog may redevelop early before clearing. Valentine’s Day weekend trends mild but unsettled. Clouds increase Friday, with a slight rain chance by afternoon and steadier rain possible later in the weekend.
Looking ahead, NOAA’s 6–10 day outlook shows above-normal temperatures building early next week. That signals a February thaw across much of Oregon, even as occasional rain systems return.
Five-Day Outlook for Eugene, OR
- Today: Dense fog early, then mostly cloudy; high near 50
- Wednesday: Morning frost, sunny later; high near 51
- Thursday: Patchy fog early, clearing; high near 52
- Friday: Clouds increase, slight rain chance; high near 50
- Saturday: Rain likely; high near 47
