Kapana Bay Rainfall ForecastUnited StatesHIHawaiiKapana BayToday 19 Apr70%Sun 20 Apr65%Mon 21 Apr65%Tue 22 Apr50%Wed 23 Apr30%Thu 24 Apr25%Fri 25 Apr20%Kapana Bay rainfall forecast issued today at 12:04 pm. Next forecast at approx. 2:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Kohala RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads