Knappa Slough - Blind Slough Entrance Rainfall ForecastUnited StatesORClatsop CountyKnappa Slough - Blind Slough EntranceToday 16 AprNo RainThu 17 AprNo RainFri 18 Apr10%Sat 19 Apr15%Sun 20 Apr55%Mon 21 Apr20%Tue 22 Apr5%Knappa Slough - Blind Slough Entrance rainfall forecast issued today at 12:04 pm. Next forecast at approx. 2:04 am.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