There is a 60 per cent chance of higher than average rainfall over August. There's also a 52 per cent that this rainfall is at least 25mm, and an 18 per cent chance that it will be at least 50mm.

It comes after the BoM's climate summary showed that Gunnedah airport received 29.6mm of rain at the airport during July.

Quirindi Post Office received a total of 37mm through July.

READ ALSO:

"The fortnight of August 3-16 is likely to be wetter than average for much of Australia," the BoM wrote in its outlook.

"The August to October period is likely to be wetter than average, with a greater than 65 per cent chance over most of the eastern two thirds of Australia."

Gunnedah has a 70 per cent chance of above average rain in the three months to October, with a 76 per cent chance of at least 100mm during this time.

Rainfall at the airport this year has already smashed the 2019 total of 232.6mm, with 431.6mm having already fallen from January to July.

The rain has bumped up levels in Keepit Dam, too, which is sitting at 19.9 per cent as of Thursday morning.

It's not enough for agricultural use yet, but it's good news for recreational users of Lake Keepit.

It was at just 6 per cent in February of this year.

Quipolly Dam is now overflowing, and Chaffey Dam is at 22.8 per cent as of Wednesday morning.