Powderville Rainfall ForecastUnited StatesMTPowder River CountyPowdervilleToday 19 Apr15%Sun 20 Apr40%Mon 21 Apr80%Tue 22 Apr35%Wed 23 Apr25%Thu 24 Apr35%Fri 25 Apr25%Powderville rainfall forecast issued today at 4:04 pm. Next forecast at approx. 6:04 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