Columbia River - Westport Slough Entrance Rainfall ForecastUnited StatesORClatsop CountyColumbia River - Westport Slough EntranceToday 17 AprNo RainFri 18 Apr15%Sat 19 Apr15%Sun 20 Apr60%Mon 21 Apr20%Tue 22 AprNo RainWed 23 Apr5%Columbia River - Westport Slough Entrance rainfall forecast issued today at 3:04 pm. Next forecast at approx. 5:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Portland RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads