Portland Rainfall ForecastUnited StatesTXSan Patricio CountyPortlandToday 18 AprNo RainSat 19 Apr5%Sun 20 Apr45%Mon 21 Apr35%Tue 22 Apr35%Wed 23 Apr35%Thu 24 Apr20%Portland 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 Corpus Christi RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads