Parts of south-east Queensland have almost reached zero overnight, with minimum temperatures dropping more than seven degrees below average for this time of year, according to the Bureau of Meteorology.
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The Darling Downs town of Oakey and Kingaroy in the South Burnett both dropped to 0.3 degrees on Saturday morning, more than seven degrees below their May average minimums.
Dalby, also in the Darling Downs, hit a low of 1.5 degrees, almost seven degrees below average, and Brisbane reached 12.3 degrees overnight, almost 1.5 below average.
Brisbane was expected to drop to just nine degrees overnight, which was last recorded in May 2015, but conditions were slightly warmer than anticipated.
BoM meteorologist Lachlan Stoney said the chilly conditions were caused by a deep low-pressure system, which was responsible for the rain and snow in southern states, which moved north and brushed past the Queensland border.
Mr Stoney said the low-pressure system had brought a cool and dry burst of air to the sunshine state.
"There will also be a wind-chill effect around Brisbane today with winds of up to 35km/h," he said on Saturday.
"With the cool and dry air, it tends to strip the warm air from your body and make it feel cooler."
The temperature drop was expected to last until early next week, with Brisbane minimums expected to remain at 10 degrees on Sunday and Monday before warming up to 12 on Tuesday.
