The Collaborative International Dictionary of English v.0.48:
Drizzly \Driz"zly\, a. Characterized by small rain, or snow; moist and disagreeable. "Winter's drizzly reign." --Dryden. [1913 Webster]WordNet (r) 3.0 (2006):
drizzly adj 1: wet with light rain; "a sad drizzly day"; "a wet drippy day" [syn: drippy, drizzly]