The weather forecast for Sunday's Daytona 500 looks bleak at the moment with showers likely to blanket Daytona International Speedway beginning at around lunchtime and are expected to last throughout the evening hours. SB Nation's Brian Neudorff thinks that there is about a 70 percent chance that the race will be run Sunday night or sometime on Monday.
As I stated above, it will rain today and rain will fall at the track. NASCAR will do everything it can and wait as long as necessary (see Atlanta's fall race last season) to get the race started and completed on Sunday. I'm stopping myself just short of calling today's 54th running of the Daytona 500 a washout, but the likelihood that this race gets moved to Sunday night or Monday is around 70 percent.
In an interesting note, during the 53-year history of the Daytona 500 not once has it ever took place on Monday. Four races, most recently in 2009, have been shortened because of either rain or darkness.