The Collaborative International Dictionary of English v.0.48:

Coldness \Cold"ness\, n.
   The state or quality of being cold.
   [1913 Webster]

WordNet (r) 3.0 (2006):

coldness
    n 1: the sensation produced by low temperatures; "he shivered
         from the cold"; "the cold helped clear his head" [syn:
         cold, coldness]
    2: a lack of affection or enthusiasm; "a distressing coldness of
       tone and manner" [syn: coldness, coolness, frigidity,
       frigidness, iciness, chilliness]
    3: the absence of heat; "the coldness made our breath visible";
       "come in out of the cold"; "cold is a vasoconstrictor" [syn:
       coldness, cold, low temperature, frigidity,
       frigidness] [ant: heat, high temperature, hotness]

Moby Thesaurus II by Grady Ward, 1.0:

165 Moby Thesaurus words for "coldness":
   Laodiceanism, absolute zero, algidity, aloofness, anesthesia,
   autism, backwardness, bashfulness, bitterness, blankness,
   bleakness, briskness, callosity, callousness, carnality, catatonia,
   chill, chilliness, cold, cold blood, cold heart, coldbloodedness,
   coldheartedness, constraint, cool, coolness, coolth, crispness,
   cryogenics, cryology, deadpan, decrease in temperature, detachment,
   disaffinity, discreetness, discretion, dispassion,
   dispassionateness, distance, dullness, emotional deadness,
   emotionlessness, enmity, expressionlessness, fervorlessness, flesh,
   fleshliness, freezing point, freshness, frigidity, frost,
   frostiness, gelidity, guardedness, halfheartedness,
   hardheartedness, hardness, hardness of heart, heart of stone,
   heartlessness, iciness, immovability, impassibility, impassiveness,
   impassivity, impersonality, impotence, inaccessibility, inclemency,
   incompatibility, incompatibleness, indifference, indifferentism,
   indifferentness, inexcitability, inhospitality, inimicality,
   insensitivity, insipidity, intense cold, introversion, keenness,
   lack of affect, lack of feeling, lack of touch, libido, love,
   lovemaking, low temperature, lukewarmness, marriage, modesty,
   neuterness, neutrality, neutralness, nip, nippiness, obduracy,
   objectivity, obtuseness, offishness, passionlessness,
   perfunctoriness, personal conflict, pitilessness, poker face,
   potency, rawness, remoteness, repression, reserve, reservedness,
   restraint, reticence, reticency, retirement, rigor,
   self-absorption, sensuality, severity, sex drive, sexiness,
   sexual instinct, sexual urge, sexualism, sexuality, sharp air,
   sharpness, soullessness, spiritlessness, standoffishness,
   straight face, strain, subduedness, suppression, tension,
   tepidness, unaffability, unamiability, unapproachability,
   uncongeniality, uncordiality, undemonstrativeness, unemotionalism,
   unexcitability, unexpansiveness, unfeeling, unfeelingness,
   unfriendliness, ungeniality, unimpressibility,
   unimpressionableness, unmercifulness, unnaturalness,
   unpassionateness, unresponsiveness, unsociability,
   unsusceptibility, unsympatheticness, untouchability, vapidity,
   voluptuousness, withdrawal, withdrawnness, zeallessness