First came the unbearable heat, then a blinding dust storm, and now, as a sunny weekend approaches, there is a sprinkling of summer snow.

Victoria's week of wild weather has ended on a frosty note as freezing temperatures overnight brought a light dusting of the white stuff across the state's alpine regions.

The snow came only two days after Melbourne hit 42 degrees, sending air-conditioners into overdrive, trains into slow motion, and families to the beach in a bid to escape the brutal heat.