LAK Reservoir Rainfall ForecastUnited StatesWYWeston CountyLAK ReservoirToday 19 Apr10%Sun 20 Apr10%Mon 21 Apr50%Tue 22 Apr20%Wed 23 Apr35%Thu 24 Apr55%Fri 25 Apr40%LAK Reservoir 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 Rapid City RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads