The sky is blue due to the end-of-the-spectrum light that passes through the ozone layer. The smaller the frequency, the easier it is for the beams to pass through the O3 with…out being deflected. Thus, the blue end of the spectrum reaches through the ozone to give the sky a blue color.   When it is snowing, the snow is falling from clouds. The white that appears in the sky is the clouds, so the answer is no. The sky is not white when it snows.