whisperwhisper (n.)
Figurative. A soft rustling sound resembling or suggesting that of a whispering voice. OED
Literary A soft rustling or murmuring sound. Lexico
Yet through it all he heard the heard the whisperwhisper of snow seeping beneath the doors seeping beneath the doors, seething along the floor toward his father lying there on the concrete, motionless, looking nowhere and breathing nothing. David Wroblewski; The Story of Edgar Sawtelle
Earlier he had glimpsed the evening star through the scudding clouds, but now the clouds had thickened and he heard the whisper of snow being driven against the window panes being driven against the window panes. J. Sawyer and G. Devon; A Christmas to Cherish
Every time he stopped to breathe, he could hear the whisper of melting snow sliding down the cliff around him... Heather Albano; Timebound