Slim Lake Rainfall ForecastUnited StatesWASkagit CountySlim LakeToday 19 Apr35%Sun 20 Apr75%Mon 21 Apr50%Tue 22 Apr10%Wed 23 Apr10%Thu 24 Apr25%Fri 25 Apr35%Slim Lake rainfall forecast issued today at 2:04 am. Next forecast at approx. 4:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Seattle RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads