kon-kon
Snow falling steadily and continuously, piling up quietly. Evokes the gentle, persistent rhythm of snowflakes accumulating without end. (Note: こんこん also means 'knock-knock' — this entry is specifically the snowfall usage.)
💡Watching snowfall from a window — 'Snow is falling kon-kon and it's already knee-deep.'
雪がこんこんと降り積もっている。
Snow is falling kon-kon and piling up.
Snow fell ___ through the night, covering the whole town.
夜通し雪が○○と降り積もり、町中が真っ白になった。