The Collaborative International Dictionary of English v.0.48:

Contemperate \Con*tem"per*ate\ (k[o^]n*t[e^]m"p[~e]r*[=a]t), v.
   t. [See Contemper.]
   To temper; to moderate. [Obs.]
   [1913 Webster]

         Moisten and contemperate the air.        --Sir T.
                                                  Browne.
   [1913 Webster]