Temperatures have plummeted across Queensland during the past 48 hours with most of the state shivering through its coldest weather in at least a year. The cold snap has brought sleet to the higher peaks of southern Queensland while frost has spread well north into the tropics. Proserpine dropped to just one degree on Friday morning, 11 below average and their coldest night in five years. Even typically mild coastal regions felt the chill with Mingela, about 40km inland, also dropping to just one. Friday night will be just as cold according to weatherzone.com.au with lows forecast to drop as much as eight below average. This will lead to further widespread frost over inland districts as far north as the Atherton Tablelands. Brisbane should wake to just five degrees on Saturday morning, the city's coldest start since August. While days will gradually warm up over the weekend, nights will remain cold until early next week.