Southeast Queensland awoke to the coldest September morning in up to 27 years. A large, slow-moving high pressure system has parked itself over the nations southeast. This lead to calm winds and virtually cloud free skies allowing for the days heat to escape. These conditions meant it was a cold start to Sunday for much of the nations east. Southeast Queenslanders shivered through temperatures as much as 12 degrees below the monthly average. In the states capital it dropped to seven degrees which is seven below the norm for this time of year. Inland at Amberley it cooled to just one degree, eigth below average and the coldest September morning since 1995. Elsewhere along the Southeast coast, Beerburrum dropped to five degrees and Beudesert to a chilly one degree. Further inland to the Darling Downs, Goondiwindi had a frosty morning with a low of minus one. This was 10 below average and it hasn't been colder in September since 1991. The icy start to the day stretched into the Maranoa. At Roma the mercury plunged to minus three, which is a whooping 12 below average the coldest September morning in 27 years. The high responsible for today's brisk start will hang around and cause another cold start on Monday morning. As the high slowly moves into the Tasman Sea later on Monday, warmer winds will begin to develop, which will allow nights and days to warm further ahead.