Tennant Lake Rainfall ForecastUnited StatesWAWhatcom CountyTennant LakeToday 20 Apr65%Mon 21 Apr20%Tue 22 AprNo RainWed 23 AprNo RainThu 24 Apr35%Fri 25 Apr55%Sat 26 Apr35%Tennant Lake rainfall forecast issued today at 7:04 am. Next forecast at approx. 9:04 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