While the city escaped the severe storms experienced in Melbourne and other parts of the state, from Friday to 9am yesterday 89.8mm of rain fell at Ballarat Airport.

And to 5pm yesterday, another 9mm was recorded.

Weatherzone meteorologist Sam Terry said the weekend had been the wettest three days in a row in Ballarat for 18 years and the wettest three autumn days for 40 years.

"March is typically one of the driest months of the year for Ballarat, yet so far we've received slightly above 200 per cent of our monthly rainfall," Mr Terry said.

"We're over the yearly average," Mr Terry said.

For weather watchers, that was just the start of the notable numbers about the weekend's rain.

The big falls also meant that:

* This month is already the wettest March in 35 years;

* The first three months of the year have been the wettest start to the year for 11 years.

* It has been the wettest start to autumn in 51 years.

The long-term average rainfall at Ballarat Airport for January, February and March is 123.4mm.

Yet despite it being only nine days into March, and despite below-average falls in the first two months of the year, 150.6mm has already been recorded at the airport.

During the same period 12 months ago, the city had received about 10mm.

Mr Terry said the rain had been caused by a low pressure system off the South Australian coast.

He said as the low moved towards Tasmania today and tomorrow, winds in Ballarat would change from the north to the south west bringing lower temperatures.

"Showers are really easing up in the next 24 hours."

Today, Ballarat can expect a top temperature of 17C, after an overnight low of 12C. Tomorrow the city will have a top of 19C.