Ottawa Rainfall ForecastUnited StatesKSFranklin CountyOttawaToday 17 Apr65%Fri 18 Apr25%Sat 19 Apr65%Sun 20 Apr75%Mon 21 Apr30%Tue 22 Apr35%Wed 23 Apr40%Ottawa rainfall forecast issued today at 12:04 am. Next forecast at approx. 2:04 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Kansas City/Pleasant Hill RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads