Willamette National Forest Rainfall ForecastUnited StatesORLane CountyWillamette National ForestToday 19 Apr35%Sun 20 Apr45%Mon 21 Apr10%Tue 22 Apr5%Wed 23 Apr15%Thu 24 Apr45%Fri 25 Apr60%Willamette National Forest rainfall forecast issued today at 3:04 am. Next forecast at approx. 5:04 pm.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