Fort Zumwalt Park Rainfall ForecastUnited StatesMOSt Charles CountyFort Zumwalt ParkToday 21 Apr100%Tue 22 AprNo RainWed 23 Apr15%Thu 24 Apr50%Fri 25 Apr75%Sat 26 Apr30%Sun 27 Apr30%Fort Zumwalt Park rainfall forecast issued today at 7:04 am. Next forecast at approx. 9:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time St Louis RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads