Lower Rio Grande Valley National Wildlife Refuge Rainfall ForecastUnited StatesTXHidalgo CountyLower Rio Grande Valley National Wildlife RefugeToday 19 Apr5%Sun 20 Apr40%Mon 21 Apr50%Tue 22 Apr45%Wed 23 Apr30%Thu 24 Apr10%Fri 25 Apr10%Lower Rio Grande Valley National Wildlife Refuge rainfall forecast issued today at 5:04 pm. Next forecast at approx. 7:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Brownsville RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads