Although it will be weakened, the extreme weather which has triggered a catastrophic fire danger rating in NSW will cross the border on Wednesday, says Bureau of Meteorology forecaster Dean Narramore.

Winds are expected to pick up late on Tuesday before peaking with gusts up to 60 km/h, he said.

Tuesday's fire danger rating for the Darling Downs and Granite Belt and Southeast Coast is already severe and will remain so on Wednesday and also take in Wide Bay and Burnett.

Winds up 30km/h expected on Tuesday will gust up to 50km/h from afternoon on.

Temperatures away from Queensland's coast will be in the mid to high 30s on Wednesday, six to 10 degrees above the November average for much of the state.

There is likely to be little reprieve on Thursday before temperatures and winds increase again from Friday throughout the weekend.

Saturday and Sunday thunderstorms are on the radar but could cause more fires as they are likely to bring only minimal rain and temperatures will be in the mid to high 30s, Mr Narramore told AAP.

Australian Associated Press