Ruby Arm Rainfall ForecastUnited StatesWAWhatcom CountyRuby ArmToday 18 Apr25%Sat 19 Apr25%Sun 20 Apr75%Mon 21 Apr50%Tue 22 Apr10%Wed 23 Apr10%Thu 24 Apr20%Ruby Arm rainfall forecast issued today at 5:04 pm. Next forecast at approx. 7:04 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