Columbia River - Saint Helens Rainfall ForecastUnited StatesORColumbia CountyColumbia River - Saint HelensToday 19 Apr30%Sun 20 Apr65%Mon 21 Apr10%Tue 22 AprNo RainWed 23 AprNo RainThu 24 Apr25%Fri 25 Apr45%Columbia River - Saint Helens rainfall forecast issued today at 4:04 pm. Next forecast at approx. 6:04 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