Boulder Lake Rainfall ForecastUnited StatesMTMissoula CountyBoulder LakeToday 19 Apr60%Sun 20 Apr60%Mon 21 Apr95%Tue 22 Apr25%Wed 23 Apr20%Thu 24 Apr20%Fri 25 Apr35%Boulder Lake rainfall forecast issued today at 5:04 pm. Next forecast at approx. 7:04 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