Rocky Boy Recreation Area Rainfall ForecastUnited StatesMTHill CountyRocky Boy Recreation AreaToday 19 Apr15%Sun 20 Apr75%Mon 21 Apr80%Tue 22 Apr45%Wed 23 Apr20%Thu 24 Apr25%Fri 25 Apr35%Rocky Boy Recreation Area rainfall forecast issued today at 3:04 am. Next forecast at approx. 5:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Great Falls RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads