AFLW grand final set for drenching but Sunday’s Grand Prix to be mostly dry
Mr Efron said Melbourne will see clouds building overnight on Friday.
"[On Saturday], we will see showers extending from the west, reaching the Melbourne area around mid-morning and then continuing into the afternoon," he said.
"There is a risk of a thunderstorm as well.
"We are looking at around 10mm of rain around the Melbourne area."
Mr Efron said it would be the first proper rain in Melbourne since the end of January.
"Over all of February and March — for the past seven weeks — Melbourne has only recorded about 5mm," he said.
"[It's an] extremely dry spell and that's not just for Melbourne, that's for the whole state."
Mr Efron said south-west Victoria, which saw bushfires destroy 18 houses this week, will also receive about 10mm.
He said the rain will begin to ease off late afternoon on Saturday, but the 7.25pm MCG blockbuster between Hawthorn and Collingwood might get some showers.
Friday night will remain balmy, with a low of 21 degrees, followed by another warm night on Saturday with a minimum of 18 degrees.
Sunday will see a cold front move in with a top of 23 degrees and winds of up to 50km/h across the state.
"There will be further showers on Sunday … only a couple of millimetres likely," Mr Efron said.
"In terms of the Grand Prix, maybe we will only see one or two showers. It is not looking too bad for the race."
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