Wordnet 3.0
NOUN (1)
1. 
 the quality of weather that is deliciously mild and soothing; 
- Example: "the day's heat faded into balminess"- Example: "the climate had the softness of the south of France"[syn: balminess, softness]
WordNet (r) 3.0 (2006):
balminess
    n 1: the quality of weather that is deliciously mild and
         soothing; "the day's heat faded into balminess"; "the
         climate had the softness of the south of France" [syn:
         balminess, softness]