Warrnambool police Acting Sergeant Bec Clark said there had been reports of black ice on roads and trees had fallen across roads due to high winds overnight.

"We just want to implore people to drive to the conditions. Slow down and stay safe," she said.

The State Emergency Service is warning people to stay away from trees, drains, gutters, creeks and waterways.

"If driving conditions are dangerous, safely pull over away from trees, drains, low-lying areas and floodwater. Avoid travel if possible," a spokesman said.

The south-west has avoided a severe weather warning in place for coastal areas in the state's east, including parts of Gippsland.

But, south-west sheep farmers are warned that cold temperatures, showers and south-westerly winds are expected during Tuesday and Wednesday.

There is a risk of losses of lambs and sheep exposed to these conditions.

At 8am in Warrnambool it was 7.0 degrees, but felt like -1.1 and we've had 9.2mm of rain since 9am yesterday.

Warrnambool is expecting a top temperature of just 11 degrees today, Hamilton 9, Colac 8, Ararat 9, Casterton 11, Mortlake 10, Heywood 11, Portland 11, Port Fairy 12, Terang 9 and Camperdown 8.

Today across the south-west will be cloudy, with the chance of a thunderstorm in the late morning and afternoon.

There will be gusty winds and possible hail.

Winds will be westerly 30 to 35 km/h turning south to south-westerly 35 to 45 km/h during the morning then decreasing to 25 to 30 km/h in the evening.

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