Grass Lake Rainfall ForecastUnited StatesMNHennepin CountyGrass LakeToday 19 Apr40%Sun 20 Apr25%Mon 21 Apr70%Tue 22 Apr35%Wed 23 Apr25%Thu 24 Apr40%Fri 25 Apr50%Grass Lake 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 Minneapolis RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads