Boulder Rainfall ForecastUnited StatesCOBoulder CountyBoulderToday 19 Apr90%Sun 20 Apr20%Mon 21 Apr10%Tue 22 Apr30%Wed 23 Apr35%Thu 24 Apr55%Fri 25 Apr45%Boulder 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 Denver RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads