Herman Griem Park Rainfall ForecastUnited StatesNYSuffolk CountyHerman Griem ParkToday 19 Apr20%Sun 20 Apr20%Mon 21 Apr10%Tue 22 Apr40%Wed 23 Apr5%Thu 24 Apr5%Fri 25 Apr25%Herman Griem Park rainfall forecast issued today at 7:04 pm. Next forecast at approx. 9:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Upton RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads