Residents have been told to expect more bad weather as they head into the weekend, with thunderstorms set to lash parts of the South West.

Bureau of Meteorology’s Ilana Cherny confirmed more rainfall is forecast as a “moisture-rich” cloud band travels across the state.

“The heaviest falls are expected through northern parts of the Gascoyne moving into southern and western parts of the Pilbara,” Ms Cherny explained.

“Through these areas we could see some storms and rainfall that will also stream through to the south-east, reaching the Eucla area.”

Describing the rainfall in the areas as “unseasonable”, the Bureau is warning travellers to be aware of the conditions.

The Bureau of Meteorology issued a marine wind warning at 9.14am on Thursday for Bunbury Geographe Coast, Leeuwin Coast, Albany Coast, Esperance Coast and Eucla Coast, with winds speeds of up to 45km/h expected.

A flood watch warning was also issued for residents in Greenough, Murchison and Wooramel, with moderate to locally heavy rainfall to continue through to Friday.

Perth is also expected to cop more rain is expected on Friday morning, with experts predicting a high chance of showers and a top of just 17C.

After a week of wintry weather conditions it’s not all doom and gloom, with residents in Perth expected to enjoy some sunny skies on Saturday.

But it won’t last long with a deluge of rainfall set to pass through the city and greater region on Sunday, with overnight temperatures falling to just 5C.

It comes only a week after much of the metro area was hit by an unusually deep low pressure system, causing riverbanks to burst, widespread flooding and power outages.