Bull Run Rainfall ForecastUnited StatesORClackamas CountyBull RunToday 19 Apr45%Sun 20 Apr60%Mon 21 Apr20%Tue 22 AprNo RainWed 23 AprNo RainThu 24 Apr35%Fri 25 Apr55%Bull Run rainfall forecast issued today at 4:04 pm. Next forecast at approx. 6:04 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