I am in a room which is heated up duringg day, in night outside temp is quite low, but my room with a ceiling fan running still feels hot as it was in day if I step outside door its cold. There is only one door and window to room.
Why room is not getting cold like outside?
Wont ceiling fan throw air and it will move out of room ?

there is approx 6-7 deg C difference. Room is made of concrete and bricks