No, no, no :-) 0-40°C --- not necessarily very warm, I don't get the flat reference, and what I meant isn't necessarily being very windy: there could be brutal wind direction/precipitation changes, maybe even global phase shifts in every orbit, or alternatively (depending on rotation period, axis tilt) there could be stark regional differences, which in turn can drive planet-wide circulation systems. The more interesting if there is water and there is coupling between the atmosphere and oceans, like on Earth but possibly on a grander scale.

_{*Lunatic*, n.
One whose delusions are out of fashion.}