Dayton weather update: Thu May 18 Scattered T-Storms 60°/46° 30% Chance of rain Fri May 19 Partly Cloudy 65°/48° 20% Chance of rain Sat May 20 Partly Cloudy 70°/56° 20% Chance of rain Sun May 21 Showers 67°/49° 40% Chance of rain Drive safely if you're going, or not. Gene