Regarding weather forecasts, nowhere seems to agree on Saturday, but Sunday is unanimously rainy.
Accuweather:
When looking at the details here, they reckon no rain until the evening on Saturday, but they think that there may be up to 20 mm during the day on Sunday.
TWC:
Weather underground:
Saturday:
Overcast in the morning, then partly cloudy with a chance of a thunderstorm and rain. High of 33C. Winds from the NW at 10 to /h. Chance of rain 40%.
Sunday:
Overcast with a chance of rain. Fog early. High of 21C. Breezy. Winds from the SSE at 10 to /h. Chance of rain 70% with rainfall amounts near 13.5 mm possible.
So, my educated guess based on the above is a hot, dry quali and a cool, wet (very wet?) race.