 Upper 70s by early tomorrow morning. For your Monday, we're tracking mostly sunny conditions. An isolated storm is possible. Temperatures, though, close to 100 with a heat index 105 to 110. I'm 7 News. I'm your doctor, Short Evans, in the Verschler Weather Center. 76 degrees at DuPont Circle, 73 in Germantown, and 77 in Annandale.