San Leon Rainfall ForecastUnited StatesTXGalveston CountySan LeonToday 18 Apr5%Sat 19 Apr5%Sun 20 Apr50%Mon 21 Apr55%Tue 22 Apr45%Wed 23 Apr60%Thu 24 Apr40%San Leon rainfall forecast issued today at 10:04 pm. Next forecast at approx. 12:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Houston/Galveston RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads