Boulder Lake Rainfall ForecastUnited StatesWASnohomish CountyBoulder LakeToday 19 Apr65%Sun 20 Apr90%Mon 21 Apr60%Tue 22 Apr5%Wed 23 Apr10%Thu 24 Apr25%Fri 25 Apr50%Boulder Lake rainfall forecast issued today at 3:04 pm. Next forecast at approx. 5:04 am.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