Daily falls of up to 30mm are forecast for the rest of the week across the Maranoa and Warrego regions, which largely missed out on downpours in January.

"This is going to be the most significant rainfall by the time we finish this week that they have seen in quite sometime," Bureau of Meteorology forecaster Harry Clark said.

Rain will hit most parts of the state this week, with the heaviest falls expected on Wednesday.

The state's southeast region will also get a reprieve from recent heat. Some towns that have recorded temperatures up to 10C above the February average are forecast to cool off by Tuesday.

Australian Associated Press