Flathead Lake State Park - Yellow Bay Unit Rainfall ForecastUnited StatesMTLake CountyFlathead Lake State Park - Yellow Bay UnitToday 19 Apr45%Sun 20 Apr55%Mon 21 Apr85%Tue 22 Apr35%Wed 23 Apr15%Thu 24 Apr15%Fri 25 Apr30%Flathead Lake State Park - Yellow Bay Unit 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 Missoula RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads