Mill Iron Rainfall ForecastUnited StatesMTCarter CountyMill IronToday 19 Apr15%Sun 20 Apr15%Mon 21 Apr70%Tue 22 Apr45%Wed 23 Apr15%Thu 24 Apr35%Fri 25 Apr35%Mill Iron 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 Rapid City RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads