Port Allen Airport Rainfall ForecastUnited StatesHIKauaiPort Allen AirportToday 19 Apr45%Sun 20 Apr50%Mon 21 Apr45%Tue 22 Apr70%Wed 23 Apr70%Thu 24 Apr70%Fri 25 Apr35%Port Allen Airport 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 South Kauai RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads