Great Swamp Wildlife Reservation Rainfall ForecastUnited StatesRIWashington CountyGreat Swamp Wildlife ReservationToday 19 Apr55%Sun 20 Apr20%Mon 21 Apr5%Tue 22 Apr50%Wed 23 Apr10%Thu 24 Apr5%Fri 25 Apr15%Great Swamp Wildlife Reservation rainfall forecast issued today at 4:04 am. Next forecast at approx. 6:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Boston RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads