Grouse Flat State Wildlife Recreation Area Rainfall ForecastUnited StatesWAGarfield CountyGrouse Flat State Wildlife Recreation AreaToday 15 AprNo RainWed 16 Apr10%Thu 17 Apr10%Fri 18 AprNo RainSat 19 Apr10%Sun 20 Apr20%Mon 21 Apr25%Grouse Flat State Wildlife Recreation Area rainfall forecast issued today at 9:04 pm. Next forecast at approx. 11:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Pendleton RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads