look up any word, like spook:
 
1.
derived from "inclement" meaning: showing no clemency; unmerciful, rough, harsh; extreme, severe...most often used to describe weather.

Etymology:
Latin
in- not
+ clementem `mild'
+ -ic having the quality of
+ -ity state of, power to
"After throwing disk, the M-Town Ultimate crew decided it was time to drink hot chocolate and bitch about the inclementicity of the weather"
by jjaffe December 18, 2004