Southern New South Wales and the ACT had a chilly start to the weekend, with some places seeing their coldest May night in half a decade. The mercury plummeted overnight as skies cleared and winds became light as a high pressure system moved over the state. Both Cooma Airport and Bombala saw their coldest May nights in five years. Bombala chilled to minus five degrees this morning, while Cooma Airport plummeted to minus nine degrees, the state's coldest official figure. Many places including Albury, Khancoban, Cootamundra and Griffith shivered through their coldest nights since September, as temperatures dipped up to seven degrees below average. Parts of the ACT also had a frosty start, dropping to minus three degrees at Canberra and minus two at Tuggeranong. The cold mornings are likely to persist over the next few days as the high pressure system slowly edges across the state. Canberra will reach at least freezing each morning until Tuesday, while Cooma should see negative figures in the mornings until Wednesday. The cold run of mornings looks to finally come to an end mid-next week as cloud increases ahead of a low pressure trough, although only light patchy rain is likely with the system.