Millions of Australians are due to be lashed by rain and storms, with the wet conditions expected to continue through the week.

Rainfalls of 50mm to 100mm could be recorded across the Murray-Darling Basin in South Australia, according to reports by Weatherzone.

A rainband is due to cross the region on Monday and Tuesday, while another is anticipated later in the week between Wednesday and Friday.

Millions of Australians are due to be lashed by rain and storms next week. Picture: Weatherzone.

NSW, Victoria and southwest Queensland are also expected to be affected by the drizzly conditions.

Sky News Weather meteorologist Tamsin Green previously said the wild weather could bring potential thunderstorms over this weekend.

“We’ll be seeing a drop in temperature in the wake of that cold front and also showers and potential thunderstorms,” she said.

While the west will battle the most severe weather, it is also likely the east coast will face fog and rain over the weekend.

Bureau of Meteorology meteorologist Sarah Scully warned of thunderstorms in Western Australia.

Western Australia could be hit with potential thunderstorms. Picture: BOM

“This deep low pressure system and associated cold front will bring wet and windy weather and even a risk of a gusty thunderstorm,” she said.

Ms Scully also said a strong and slow-moving high pressure system in the east is still hanging around the southeast.

“It will continue to bring areas of morning fog and direct this moist onshore flow to the east coast, bringing scattered showers,” she said.

“Further inland, this trough will bring some instability with showers there.”

Brisbane

Brisbane will have a cooler day with a top of 21 and a low of 12C on Monday.

Sydney

Scattered showers are predicted across the east coast. Picture: NewsWire / Sarah Marshall

It is expected to be a partly cloudy Monday in Sydney with the odd shower.

The harbour city will have a low of 12 and a top of 20C.

Canberra

It will be a cold start for the nation’s capital, with Canberrans due to experience a low of 5C.

It is expected the capital will warm up to 15C with a medium chance of showers through the day.

Melbourne

It will be a cool start for Victorians with temperatures ranging from 10 to 17C on Monday with a chance of showers.

Hobart

Tasmania is in for a mostly sunny day with a small chance of showers heading into the evening.

Temperatures will range from a low of 4 to a high of 15C.

Adelaide

Temperatures will range from 11 to 18C with a very high chance of showers in Adelaide.

Perth

Wet and windy conditions are expected in Perth, with a very high chance of rain.

Temperature will range from 10 to 18C.

Darwin

It is expected to be dry and sunny in Darwin.

Temperatures will range between 20 to 31C.