 The WTOP Traffic Center is presented by Window Nation. Buy two windows, get two free. Visit windownation.com. I'm Butch Seltzer, WTOP Traffic. Now to 7 News First Alert meteorologist Mark Pena. After one of the cooler afternoons that we've seen in about two weeks, shower activity is coming to an end now across the DMV. Partly cloudy skies return in the forecast tonight and temperatures fall to about 70 degrees by tomorrow morning.