Great Northern Mountain Rainfall ForecastUnited StatesMTFlathead CountyGreat Northern MountainToday 18 Apr10%Sat 19 Apr25%Sun 20 Apr75%Mon 21 Apr95%Tue 22 Apr65%Wed 23 Apr30%Thu 24 Apr25%Great Northern Mountain rainfall forecast issued today at 7:05 pm. Next forecast at approx. 9:05 am.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