River Forth - Forth Viaduct Rainfall ForecastUnited KingdomTAStirlingRiver Forth - Forth ViaductToday 31 Mar15%Wed 1 Apr90%Thu 2 Apr80%Fri 3 Apr85%Sat 4 Apr60%Sun 5 Apr40%River Forth - Forth Viaduct rainfall forecast issued today at 1:36 am. Next forecast at approx. 3:36 pm.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast Met Office Rain Today Real-Time Holehead (Stirling) RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads