Neff Reservoir Rainfall ForecastUnited StatesWYNatrona CountyNeff ReservoirToday 19 Apr10%Sun 20 Apr25%Mon 21 Apr40%Tue 22 Apr10%Wed 23 Apr25%Thu 24 Apr45%Fri 25 Apr35%Neff Reservoir rainfall forecast issued today at 7:05 pm. Next forecast at approx. 9:05 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Riverton RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads