Rain

On Titan, Saturn's largest moon, infrequent methane rain is thought to carve the moon's numerous surface channels.[145] On Venus, sulfuric acid virga evaporates 25 kilometres (16 mi) from the surface.[146] There is likely to be rain of various compositions in the upper atmospheres of the gas giants, as well as precipitation of liquid neon in the deep atmospheres.[147][148] Extrasolar planet OGLE-TR-56b in the constellation Sagittarius is reported to have iron rain.[149]
http://en.wikipedia.org/wiki/Rain