Pittsburgh International Airport Rainfall ForecastUnited StatesPAAllegheny CountyPittsburgh International AirportToday 18 Apr5%Sat 19 Apr80%Sun 20 Apr40%Mon 21 Apr60%Tue 22 Apr40%Wed 23 Apr10%Thu 24 Apr30%Pittsburgh International Airport 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 Pittsburgh RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads