 Could have an isolated storm Saturday, better chances on Sunday. I'm 7 News Chief Meteorologist Veronica Johnson in the First Alert Weather Center. Gaithersburg at 73, Arlington 72, Lanham 72, going down to the upper 60s in a few places. We're brought to you by Dulles Glass. For all your glass, mirror, and shower door needs, visit dullesglass.com. Dulles Glass. Love your glass.