 Overnight 70s. Tomorrow we do it again. In fact, that heat and humidity will stick with us through about midweek. A potent cold front should drop temperatures, though, for the latter half of the work week. I'm 7 News meteorologist Brian Van de Graaff in the First Alert Weather Center. Right now, 75 in Germantown. Already 79 in Annandale. We have 77 degrees in downtown D.C.