The Collaborative International Dictionary of English v.0.48:

Inclemency \In*clem"en*cy\, n.; pl. Inclemencies. [L.
   inclementia: cf. F. incl['e]mence.]
   [1913 Webster]
   1. The state or quality of being inclement; lack of clemency;
      lack of mildness of temper; unmercifulness; severity.
      [1913 Webster]

            The inclemency of the late pope.      --Bp. Hall.
      [1913 Webster]

   2. Physical severity or harshness (commonly in respect to the
      elements or weather); roughness; storminess; rigor; severe
      cold, wind, rain, or snow.
      [1913 Webster]

            The inclemencies of morning air.      --Pope.
      [1913 Webster]

            The rude inclemency of wintry skies.  --Cowper.

   Syn: Harshness; severity; cruelty; rigor; roughness;
        storminess; boisterousness.
        [1913 Webster]

WordNet (r) 3.0 (2006):

inclemency
    n 1: weather unsuitable for outdoor activities [syn: bad
         weather, inclemency, inclementness] [ant: good
         weather]
    2: excessive sternness; "severity of character"; "the harshness
       of his punishment was inhuman"; "the rigors of boot camp"
       [syn: severity, severeness, harshness, rigor,
       rigour, rigorousness, rigourousness, inclemency,
       hardness, stiffness]