Nah, couldn't be. Rain is water. When it falls it would go between the snow flakes and drain off, leaving the snow on top
well actually if it was man made snow, it would! Fact is, that man made snow holds up BETTER then natural snow with rain, because the shape of man made snow allows water to easilly flow between, naturally draining out, versus it puddling on top with natural snow learn something new everyday dont ya?