 Meanwhile, our temperatures overnight, first thing Friday, 68 to 75 degrees. Budget extra time for your morning commute with areas of wet weather. High temperature on Friday could be the coolest in a month, 78 to 83 degrees across the area. But have your rain jacket, your umbrella ready to go. I'm 7 News Chief Meteorologist Veronica Johnson in the First Alert Weather Center. Tysons is at 79, Waldorf 77, Lafonte Plaza 83 degrees.