noun (n)

• weather unsuitable for outdoor activities(noun.state)

  Synonym:
  bad weather, inclementness
  Antonym:
  good weather
  

  source: wordnet30
• excessive sternness(noun.attribute)

  Synonym:
  hardness, harshness, rigor, rigorousness, rigour, rigourousness, severeness, severity, stiffness
  

  source: wordnet30
• The state or quality of being inclement; want of clemency; want of mildness of temper; unmercifulness; severity.(noun)

  source: webster1913