I don't worry about it to much. I usually won't address it until it gets to around 25* out of range and is trending further, then I make an adjustment to my intake. I'm talking Weber Kettle not UDS.
Weber Performer with rotisserie ring, 22.5OTS, Maverick 732, Weber Smokey Joe,PBC Smokenator/Hoovergrill, variety of microbrews, Gin and tonic, variety of lighters.:blah: