Lake Otatsy Rainfall ForecastUnited StatesMTPowell CountyLake OtatsyToday 19 Apr55%Sun 20 Apr65%Mon 21 Apr90%Tue 22 Apr30%Wed 23 Apr25%Thu 24 Apr30%Fri 25 Apr45%Lake Otatsy rainfall forecast issued today at 4:04 am. Next forecast at approx. 6:04 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