The Collaborative International Dictionary of English v.0.48:

Contemperature \Con*tem"per*a*ture\
   (k[o^]n*t[e^]m"p[~e]r*[.a]*t[-u]r; 135), n.
   The condition of being tempered; proportionate mixture;
   temperature. [Obs.]
   [1913 Webster]

         The different contemperature of the elements. --South.
   [1913 Webster]