Columbia River - Sand Island Marine Park Rainfall ForecastUnited StatesORColumbia CountyColumbia River - Sand Island Marine ParkToday 19 Apr30%Sun 20 Apr65%Mon 21 Apr10%Tue 22 AprNo RainWed 23 AprNo RainThu 24 Apr25%Fri 25 Apr45%Columbia River - Sand Island Marine Park 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