Rainfall of up to 15mm through cropping regions in Victoria and SA will be critical in getting crop established.
A weather station at Mt Baw Baw recorded a single day total the BOM believes is in the top 5 all time tallies for Victoria.
There has been a final flourish to what had already been a wet May through much of the WA cropping belt, with heavy rain over the weekend.
South-eastern Australia shivered through an Arctic end to May, with many centres recording their coldest May night on record.
There is a good chance of a wetter than average winter through the Murray Darling Basin according to the BOM, but WA is likely to be dry.
It's an old theory hat if one side of the country is wet, the other is dry - now it has been proved there is some science behind it.