Cumberland Mountain Lake Rainfall ForecastUnited StatesTNGrundy CountyCumberland Mountain LakeToday 18 AprNo RainSat 19 AprNo RainSun 20 Apr5%Mon 21 Apr65%Tue 22 Apr40%Wed 23 Apr30%Thu 24 Apr40%Cumberland Mountain Lake rainfall forecast issued today at 2:04 am. Next forecast at approx. 4:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Huntsville RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads