Myrtle Beach (Grande Dunes Blvd) Rainfall ForecastUnited StatesSCHorry CountyMyrtle Beach (Grande Dunes Blvd)Today 19 AprNo RainSun 20 AprNo RainMon 21 AprNo RainTue 22 Apr5%Wed 23 Apr35%Thu 24 Apr30%Fri 25 Apr10%Myrtle Beach (Grande Dunes Blvd) rainfall forecast issued today at 4:04 pm. Next forecast at approx. 6:04 am.1-Day3-Day5-Day Graph Plots Open in Graphs Rainfall Probability Forecast NOAA Rain Today Real-Time Wilmington RadarNational SatelliteNational SynopticGet WillyWeather+ to remove ads