Eighth Coulee Bay Rainfall ForecastUnited StatesMTValley CountyEighth Coulee BayToday 19 AprNo RainSun 20 Apr25%Mon 21 Apr85%Tue 22 Apr45%Wed 23 Apr10%Thu 24 Apr20%Fri 25 Apr20%Eighth Coulee Bay rainfall forecast issued today at 4:04 pm. Next forecast at approx. 6:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Glasgow RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads