Floods hit large areas of NSW as horror run of wet weather shows no sign of ending for at least a WEEK - here's how the weather will be where you are

A Woolworths and local motel are flooded and the roof of an aged care facility partially collapsed after torrential rain in central western NSW.

Parkes received 31mm of rain in just 17 minutes during the Saturday afternoon downpour.

By Sunday morning, the town was drenched with 52mm of rain by the storm that also brought damaging winds and large hailstones.

Rain and storms will continue in most of NSW with warnings of flash flooding in some areas

Part of another roof blew off and residential properties also experienced flooding.

Thunderstorms across much of NSW prompted 45 calls for assistance between 6pm Saturday and 6am Sunday, the State Emergency Service said.

Broken Hill and Parkes have been hardest hit by the extreme weather over the past few days, with Wauchope and Taree on the mid north coast also affected.

Thunderstorms across much of NSW prompted 45 calls for assistance between 6pm Saturday and 6am Sunday. Pictured: Rocks Ferry Park in Wauchope

The biggest downpour on Saturday was at Okeh to the north, which copped more than 61mm to 9am Saturday.

The SES has responded to 300 incidents state wide since New Year's Eve, including four flood rescues.

Near Parkes, a person was trapped in a car in flood water.

A driver and passengers were stranded in their vehicle in Tibooburra, in the state's west, on New Year's Eve, while at Wauchope, on the mid north coast, two people had to be rescued from rising waters late on Friday.

SES has responded to 300 incidents state wide since New Year's Eve, including four flood rescues. Pictured: road in Wauchope

Persistent, unpredictable bad weather caused dangerous flash flooding around the mid north coast, closing bridges and roads, Ilana Pender-Rose of the SES told AAP on Sunday morning.

About 1640 residents remain circled by water and cut off in Taree, Harrington and Camden Haven.

Some are expected to be isolated for weeks, others for only a few days.

There are flood alerts for the Bellinger, Hastings, Paroo and Camden Haven rivers.

The wet weather has been caused by an inland trough with upper level system support, Shuang Wang of the Bureau of Meteorology said.

Rainfall will continue throughout the state as the trough moves east, with possible thunderstorms on Sunday afternoon.

Monday 'will be a big day' across the most eastern part of the state, potentially affecting Sydney and Canberra, Ms Wang said.

'We're asking people to get ready because this probably isn't over,' Ms Pender-Rose said.

She asked people to be aware of flood risks as they return from holidays around NSW but especially on the mid north coast, where SES volunteers have set up sandbagging stations.

Sydney will be experiencing a wet few days with no signs of it ending for at least a week

Meanwhile, some areas of Australia are experiencing a proper summer with blue skies and hot sun. Pictured: Scarborough Beach in Perth

'Please take it easy, think before you drive anywhere and be aware of the flood risk of wherever you are staying,' she said.

Sydney is also in for a rainy few days. The forecast has a very high chance of rain until Tuesday, with a good chance of showers beyond that.

Swimmers were warned to avoid Bronte Beach and Narrabeen Lagoon because of pollution caused by rain. Many other swimming sites throughout the city and the Illawarra are also affected.

Across Australia, the forecast will remain wet with Melbourne, Brisbane, Darwin and Canberra to have heavy showers and even possible storms over the week. 

Perth and Adelaide will remain relatively dry and sunny with Hobart forecasted to have a possible chance of showers in the next couple of days.  

'Please take it easy, think before you drive anywhere and be aware of the flood risk of wherever you are staying,' Ilana Pender-Rose of the SES urges all to take care and be ready. Pictured: Resident's front yard in Broken Hill 

SEVEN DAY WEATHER IN YOUR CITY 

SYDNEY     

SUNDAY: Min 19 Max 25 Showers 

MONDAY: Min 20 Max 29 Showers, Possible storms

TUESDAY: Min 19 Max 26 Shower or two

WEDNESDAY: Min 19 Max 25 Shower or two

THURSDAY: Min 19 Max 24 Shower or two

FRIDAY: Min 18 Max 24 Shower or two

SATURDAY: Min 18 Max 25 Shower or two 

BRISBANE     

SUNDAY: Min 22 Max 29 Possible morning shower 

MONDAY: Min 23 Max 30 Partly cloudy

TUESDAY: Min 23 Max 32 Partly cloudy

WEDNESDAY: Min 24 Max 30 Showers increasing

THURSDAY: Min 22 Max 26 Shower or two

FRIDAY: Min 21 Max 28 Possible shower

SATURDAY: Min 21 Max 30 Possible shower

ADELAIDE     

SUNDAY: Min 16 Max 26 Partly cloudy

MONDAY: Min 16 Max 24 Cloudy

TUESDAY: Min 13 Max 25 Partly cloudy

WEDNESDAY: Min 13 Max 25 Partly cloudy

THURSDAY: Min 13  Max 29 Mostly sunny

FRIDAY: Min 17 Max 33 Mostly sunny 

SATURDAY: Min 20 Max 32 Mostly sunny

CANBERRA   

SUNDAY: Min 15 Max 22 Showers, Possible storm

MONDAY: Min 15 Max 26 Showers, Possible storm

TUESDAY: Min 14 Max 25 Shower or two

WEDNESDAY: Min 13 Max 24 Partly cloudy

THURSDAY: Min 11 Max 23 Cloudy

FRIDAY: Min 10 Max 23 Cloudy

SATURDAY: Min 10 Max 24 Cloudy

MELBOURNE     

SUNDAY: Min 17 Max 24 Showers, Possible storms

MONDAY: Min 17 Max 21 Shower or two

TUESDAY: Min 15 Max 21 Shower or two

WEDNESDAY: Min 14 Max 20 Possible shower

THURSDAY: Min 13 Max 27 Partly cloudy

FRIDAY: Min 15 Max 29 Sunny

SATURDAY: Min 17 Max 31 Partly cloudy

PERTH     

SUNDAY: Min 18 Max 33 Mostly sunny, Windy morning

MONDAY: Min 17 Max 35 Sunny

TUESDAY: Min 19 Max 36 Sunny

WEDNESDAY: Min 22 Max 37 Sunny

THURSDAY: Min 24 Max 37 Mostly sunny

FRIDAY: Min 24 Max 37 Partly cloudy 

SATURDAY: Min 23 Max 26 Partly cloudy 

HOBART     

SUNDAY: Min 14 Max 21 Cloudy

MONDAY: Min 14 Max 22 Shower or two

TUESDAY: Min 13 Max 21 Possible shower

WEDNESDAY: Min 14 Max 20 Possible shower

THURSDAY: Min 10 Max 22 Partly cloudy

FRIDAY: Min 12 Max 24 Mostly sunny

SATURDAY: Min 13 Max 26 Partly cloudy

DARWIN 

SUNDAY: Min 27 Max 34 Partly cloudy

MONDAY: Min 26 Max 34 Possible shower or storm

TUESDAY: Min 26 Max 33 Shower or two, Possible storm

WEDNESDAY: Min 25 Max 33 Showers, Possible storm

THURSDAY: Min 25 Max 33 Shower or two, Possible storm

FRIDAY: Min 25. Max 33. Shower or two, Possible storm

SATURDAY: Min 26 Max 33 Shower or two, Possible storm 

Source: Bureau of Meteorology 

Northern and eastern part of Australia expected to be hit with rain over the next seven days