Southgate Triangle Rainfall ForecastUnited StatesMTMissoula CountySouthgate TriangleToday 19 Apr40%Sun 20 Apr45%Mon 21 Apr80%Tue 22 Apr15%Wed 23 Apr10%Thu 24 Apr15%Fri 25 Apr30%Southgate Triangle 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