 The Northern Tablelands have relatively mild summers and cold winters, due to their high elevation in the Great Dividing Range.The coldest region is the Snowy Mountains where the snow and frost continues for a long period during the winter months.The Blue Mountains, Southern Tablelands and Central Tablelands, which are situated on the Great Dividing Range, have mild to warm summers and cold winters, although not as severe as those in the Snowy Mountains.