Rain occupies a surprisingly rich position across the depth-psychology corpus, functioning simultaneously as cosmogonic force, ritual instrument, psychological symbol, and phenomenological analogy. The traditions surveyed span Greek myth, Chinese divination, Indian cosmology, Jungian clinical commentary, and comparative religion, yet converge on a shared recognition that rain names the threshold between potential and actuation — clouds that gather but have not yet released. In the I Ching literature (Huang, Wilhelm, Wang Bi, Ritsema/Karcher), rain and its anticipation structure entire hexagrams, most notably Hsü (Waiting/Needing), where the ideograph itself depicts either descending raindrops or a priest praying for rain; the commentary tradition reads the unreleased storm as a call for patient readiness. In Harrison and Freud, rain-making ritual discloses the mimetic logic of sympathetic magic — thunder-chariots, scattered water, enacted intercourse — whereby human performance compels meteorological response. Von Franz elevates the motif to its most psychologically charged register through the Wilhelm rainmaker story, where the restoration of inner order in the Taoist adept is credited with ending a drought, making rain the external sign of an achieved interiority. Jung’s dream-seminar material identifies the rain ancestor as a totem archetype, collapsing meteorological phenomenon and primordial human form. Campbell and Zimmer treat rain as the eschatological hinge in Indian cosmic cycles: the seven-day rain that closes an aeon and renews the world’s seeds. The term therefore maps onto fertility, psychic wholeness, waiting, archetypal embodiment, and cosmic renewal — domains rarely unified but here repeatedly constellated around precipitation.