Greenbriar Colony Rainfall ForecastUnited StatesTXHarris CountyGreenbriar ColonyToday 18 AprNo RainSat 19 Apr5%Sun 20 Apr70%Mon 21 Apr70%Tue 22 Apr50%Wed 23 Apr70%Thu 24 Apr55%Greenbriar Colony rainfall forecast issued today at 6:04 pm. Next forecast at approx. 8:04 am.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