Allen Island Rainfall ForecastUnited StatesMEKnox CountyAllen IslandToday 19 Apr55%Sun 20 Apr20%Mon 21 AprNo RainTue 22 Apr60%Wed 23 Apr10%Thu 24 Apr10%Fri 25 Apr15%Allen Island rainfall forecast issued today at 8:04 am. Next forecast at approx. 10:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Portland RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads