DAYTONA BEACH, Fla. — Rain is anticipated this weekend at Daytona. Accuweather calls for more than a 90% chance of rain both Saturday and Sunday. There are expected to be periods of rain, some heavy, on Sunday afternoon. The 66th running of the Daytona 500, the first official Cup Series points race of the season, is scheduled to begin at 2:30 p.m. NASCAR has moved its ARCA Menards Series race to 10:30 p.m. Friday. Saturday, when the Xfinity Race is still currently scheduled, is shaping up to be a rain-filled day. The National Weather Service forecasts showers turning into heavy rain after 1 p….