Dependence of the level of laser signal fluctuations in snowfall on the receiver diameter, optical thickness of precipitation, and maximum size of snowflakes has been studied experimentally. The level of saturation (σs ) and optical thickness (τs ) at which the saturation occurs increase with maximum size of snowflakes (Dm ) when the receiver diameter is 3.1 mm. At the same time τs decreases with the increase of the receiver diameter for close values of snowflakes size.