ANZ rural Con Williams said the market's focus was on offshore markets, particularly as European supply expands quite aggressively.
"Technically, it's difficult to see whole milk powder punching too much lower from where it got to at he last auction," he said.
OM Financial's director financial markets Nigel Brunel said increased production could weigh on the market.
Last year's season as characterised by a long "shoulder" - strong production following the October peak.
"Those (DCANZ) production numbers won't help, and if we get some fine weather and a longer shoulder, then it definitely won't help (prices)," he said.
Fonterra's milk price forecast for the current season has been under downward pressure after product prices fell by 3.5 per cent at the last GlobalDairyTrade auction early this month.
Whole milk powder prices, the most important component of the forecast, fell by 5.5 per cent to US$2852/tonne - the third decline in a row - at the sale.
Fonterra's next update is due in December, although the board may choose to revise the forecast earlier.
Most bank forecasts are in the $6.25-$6.50 range.
Fonterra's current $6.75/kg forecast for this season compares with $6.12/kg of milksolids in 2016/17 season.
Farmgate milk prices slumped to $3.90/kg and $4.40kg - in each of the preceding seasons.
The next GDT auction is due on Wednesday.