FPUS42 KMLB 180710 City Forecast for Daytona Beach, FL Issued Saturday morning - May 18, 2013 .Saturday... Partly cloudy, high 86, 20% chance of precipitation. .Saturday night... Low 70, 20% chance of precipitation. .Sunday... Partly cloudy, high 85, 30% chance of precipitation. .Sunday night... Low 70. .Monday... High 85.