 I'm Robert Workman, WTOP Traffic. Chance for a little patchy fog early on your Saturday morning, mainly south of D.C. Otherwise, temperatures 70 to 75 degrees and a high temperature at 90 to 91 degrees with a mixture of clouds and sunshine and an afternoon thunderstorm or two. Better chance of storms on Sunday. I'm 7 News Chief Meteorologist Veronica Johnson in the First Alert Weather Center.