Oregon Zoo Rainfall ForecastUnited StatesORMultnomah CountyOregon ZooToday 16 AprNo RainThu 17 AprNo RainFri 18 AprNo RainSat 19 Apr5%Sun 20 Apr15%Mon 21 Apr10%Tue 22 AprNo RainOregon Zoo rainfall forecast issued today at 12:04 am. Next forecast at approx. 2:04 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