Source : Webster's Revised Unabridged Dictionary (1913)

Showery \Show"er*y\, a.
   1. Raining in showers; abounding with frequent showers of
      rain.

   2. Of or pertaining to a shower or showers. ``Colors of the
      showery arch.'' --Milton.

Source : WordNet®

showery
     adj : (of weather) wet by periods of rain; "showery weather";
           "rainy days" [syn: {rainy}]