Prices have fallen in the global dairy auction overnight, to their lowest level in two months.
The average price at the auction fell 1.7 percent to $US3004 a tonne.
It compares with a 5.1 percent fall at the last auction two weeks ago.
The price of wholemilk powder, which strongly influences the payouts for local farmers, dropped 2.2 percent to $US2936 a tonne.
The prices for most products sold including butter and cheese also fell.
The volume of products sold fell more than 4 percent.