Otherwise, mostly cloudy, with a low around 46. Patchy dense fog before 11am. Your local forecast office is. Coastal waters forecast with wave detail. Sunny to partly cloudy and pleasant hi: Your local forecast office is. Coastal waters forecast with wave detail. Mahlon sweet field, usa). See more current weather. Eugene extended forecast with high and low temperatures. Webknow what's coming with accuweather's extended daily forecasts for eugene, or. Up to 90 days of daily highs, lows, and precipitation chances. Websee the eugene, or extended weather forecast including feels like temperature, wind gust and chance of rain or snow from theweathernetwork. com.