Biscayne Bay - MacArthur Causeway Rainfall ForecastUnited StatesFLMiami-Dade CountyBiscayne Bay - MacArthur CausewayToday 18 AprNo RainSat 19 AprNo RainSun 20 AprNo RainMon 21 AprNo RainTue 22 Apr5%Wed 23 Apr10%Thu 24 Apr10%Biscayne Bay - MacArthur Causeway rainfall forecast issued today at 3:04 pm. Next forecast at approx. 5:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Miami RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads