Lake Lyndon B Johnson Rainfall ForecastUnited StatesTXLlano CountyLake Lyndon B JohnsonToday 19 Apr50%Sun 20 Apr65%Mon 21 AprNo RainTue 22 Apr40%Wed 23 Apr60%Thu 24 Apr55%Fri 25 Apr50%Lake Lyndon B Johnson rainfall forecast issued today at 9:04 pm. Next forecast at approx. 11:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Central Texas RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads