I got up this morning and headed for the kitchen to start my coffee, idly noticing that the furnace was running. As I went through the living room, I realized why the bedroom had been so uncommonly nice and toasty; the living room windows were open! (The thermostat is closer to the living room than it is to the bedroom.) It was so nice yesterday that we had opened them, and after watching the Olympics until 11:00PM, I forgot to close them when I went to bed. That might suggest to you that it was still rather mild even that late in the evening.
Weather service is promising more of the same; just slightly cooler by the end of the week.