You dont have to be a genius ..

The Climate Models suggest a drier Winter for Adelaide...   
last year was one of the wettest .

or you could just go the 74 year cycle... ( Arctic melt to Arctic melt )

I equate 2017 to 1943 .

Alarmist's will not understand.

Adelaide Rainfall Record 160years ratings.
160 Autumn Winter Spring Summer Autumn Winter Spring Summer
Rain 135.6 203.6 127.6   66.4
24th 189.3 in 1880 259.7 in 1883 174.7 in 1908 110.5 in 1912/13
25th 187.3 in 1861 257.5 in 1942 174.4 in 1980 108.7 in 1870/71
26th 186.4 in 1898 255.2 in 1956 173.5 in 1877 108.1 in 1959/60  

123rd 88.1 in 1885 155.6 in 1850   93.9 in 1881   33.6 in 1899/00
124th 87.1 in 1957 154.8 in 1943 93.2 in 1946   33.5 in 1893/94
125th 86.8 in 1876 149.9 in 1841   92.6 in 1936   33.0 in 1868/69

http://www.australiasevereweather.com/links/rainrec/ade-s.htm

Might set myself up as a climate adviser and rake in the cash.