Hakalau Rainfall ForecastUnited StatesHIHawaiiHakalauToday 18 Apr75%Sat 19 Apr70%Sun 20 Apr70%Mon 21 Apr70%Tue 22 Apr70%Wed 23 Apr25%Thu 24 Apr30%Hakalau rainfall forecast issued today at 6:04 pm. Next forecast at approx. 8:04 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