Sulphur Mountain Lake Rainfall ForecastUnited StatesWASnohomish CountySulphur Mountain LakeToday 19 Apr35%Sun 20 Apr70%Mon 21 Apr45%Tue 22 Apr5%Wed 23 Apr10%Thu 24 Apr25%Fri 25 Apr35%Sulphur Mountain 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 Seattle RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads