Willow Creek Reservoir Rainfall ForecastUnited StatesMTLewis and Clark CountyWillow Creek ReservoirToday 19 Apr45%Sun 20 Apr55%Mon 21 Apr75%Tue 22 Apr35%Wed 23 Apr20%Thu 24 Apr25%Fri 25 Apr35%Willow Creek Reservoir rainfall forecast issued today at 2:04 am. Next forecast at approx. 4:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Great Falls RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads