Lake Isabel Rainfall ForecastUnited StatesMTFlathead CountyLake IsabelToday 15 AprNo RainWed 16 Apr95%Thu 17 Apr55%Fri 18 Apr20%Sat 19 Apr15%Sun 20 Apr70%Mon 21 Apr80%Lake Isabel rainfall forecast issued today at 7:10 am. Next forecast at approx. 9:10 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Missoula RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads