Granite Park Rainfall ForecastUnited StatesWYJohnson CountyGranite ParkToday 19 Apr25%Sun 20 Apr70%Mon 21 Apr90%Tue 22 Apr55%Wed 23 Apr50%Thu 24 Apr55%Fri 25 Apr45%Granite Park rainfall forecast issued today at 8:04 pm. Next forecast at approx. 10:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Billings RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads