Brisbane is in for its coldest nights this winter, as much as three degrees colder than experienced so far.
Last night's minimum was 10 degrees, which is right on the average for July. However, from tonight it will be much colder and the next three nights are all expected to be colder than any other night so far this winter.
The coldest times will be early Tuesday and Wednesday morning with the temperature chilling to about five degrees as people head off for work. This is three degrees colder than the cold mornings experienced a week and a half ago.
This is also likely to be exceptional winter weather for Brisbane as the mercury hasn't dipped to five degrees in four years.
These cold nights will be due to a cold airmass in the wake of a cold front that will arrive tonight. The cold airmass will combine with light southwesterly winds and clear skies to produce very chilly nights.
Clear skies should persist until at least Wednesday, when winds turn more southeasterly, bringing in some moisture and cloud off the ocean. Good news for fans attending the State Of Origin is that it's not looking too chilly or breezy and there's almost no chance of rain.
This more humid air will take the chill out of the air, leading to warmer nights and bringing the chance of showers from Friday.
© Weatherzone 2012
16:06 EST The weather bureau has implemented a new system of forecasting the seasonal outlook called Predictive Ocean Atmosphere Model for Australia, or POAMA.