shou'-er: (1) rebhibhim, a plural form apparently denoting gentle rain, usually used figuratively, as in De 32:2; Ps 72:6; Mic 5:7. (2) geshem, used of gentle rain in Job 37:6: "shower of rain," the King James Version "small rain"; used of the flood in Ge 7:12. Figuratively, of blessing, "showers of blessing" (Eze 34:26); of destruction: "There shall be an overflowing shower in mine anger, and great hailstones in wrath to consume it" (Eze 13:13). (3) zerem, usually storm or tempest (compare Isa 4:6; 28:2): "They are wet with the showers of the mountain" (Job 24:8). (4) ombros (Lu 12:54), Rain is unknown in Palestine in the long summer of 5 or 6 months. A few showers usually fall in September, succeeded by fine weather for some weeks before the beginning of the heavy and long-continued winter rains.
⇒See the definition of shower in the KJV Dictionary
Alfred Ely Day