Weather for Long Gulch Riffle, OR - Long Gulch Riffle, OR Weather, Current Weather in Long Gulch Riffle, OR. Local weather report for Long Gulch Riffle, OR, Local Long Gulch Riffle, OR weather. Forecast for Long Gulch Riffle, Oregon, Long Gulch Riffle, OR weather forecast. Find your local Long Gulch Riffle weather forecast. Long Gulch Riffle, OR weather conditions.