Little Grass Mountain Rainfall ForecastUnited StatesIDBonner CountyLittle Grass MountainToday 19 Apr90%Sun 20 Apr80%Mon 21 Apr65%Tue 22 Apr15%Wed 23 Apr15%Thu 24 Apr10%Fri 25 Apr35%Little Grass Mountain rainfall forecast issued today at 3:04 pm. Next forecast at approx. 5:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Spokane RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads