The Collaborative International Dictionary of English v.0.48:
Rainy \Rain"y\ (r[=a]n"[y^]), a. [AS. regenig.] Abounding with rain; wet; showery; as, rainy weather; a rainy day or season. [1913 Webster]WordNet (r) 3.0 (2006):
rainy adj 1: (of weather) wet by periods of rain; "showery weather"; "rainy days" [syn: showery, rainy]