The Collaborative International Dictionary of English v.0.48:
Temperateness \Tem"per*ate*ness\, n. The quality or state of being temperate; moderateness; temperance. [1913 Webster]WordNet (r) 3.0 (2006):
temperateness n 1: moderate weather; suitable for outdoor activities [syn: fair weather, sunshine, temperateness] 2: exhibiting restraint imposed on the self; "an effective temperateness in debate" [syn: self-restraint, temperateness]