Columbia River - Glenn L. Jackson Memorial Bridge Rainfall ForecastUnited StatesORMultnomah CountyColumbia River - Glenn L. Jackson Memorial BridgeToday 21 Apr5%Tue 22 AprNo RainWed 23 AprNo RainThu 24 Apr40%Fri 25 Apr55%Sat 26 Apr40%Sun 27 Apr25%Columbia River - Glenn L. Jackson Memorial Bridge rainfall forecast issued today at 4:04 am. Next forecast at approx. 6:04 pm.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