The Collaborative International Dictionary of English v.0.48:

Temperate \Tem"per*ate\, a. [L. temperatus, p. p. of temperare.
   See Temper, v. t.]
   1. Moderate; not excessive; as, temperate heat; a temperate
      climate.
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   2. Not marked with passion; not violent; cool; calm; as,
      temperate language.
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            She is not hot, but temperate as the morn. --Shak.
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            That sober freedom out of which there springs
            Our loyal passion for our temperate kings.
                                                  --Tennyson.
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   3. Moderate in the indulgence of the natural appetites or
      passions; as, temperate in eating and drinking.
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            Be sober and temperate, and you will be healthy.
                                                  --Franklin.
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   4. Proceeding from temperance. [R.]
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            The temperate sleeps, and spirits light as air.
                                                  --Pope.
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   Temperate zone (Geog.), that part of the earth which lies
      between either tropic and the corresponding polar circle;
      -- so called because the heat is less than in the torrid
      zone, and the cold less than in the frigid zones.
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   Syn: Abstemious; sober; calm; cool; sedate.
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WordNet (r) 3.0 (2006):

Temperate Zone
    n 1: the part of the Earth's surface between the Arctic Circle
         and the Tropic of Cancer or between the Antarctic Circle
         and the Tropic of Capricorn; characterized by temperate
         climate