It was a hot and humid evening in Sydney overnight as high temperatures met with high humidity to create an unpleasant night's sleep for some.
Penrith recorded the highest temperature on earth on Sunday, reaching a record top of 47.3 degrees.
"It looks like it's the highest temperature recorded in the Sydney area in 80 years," Jacob Cronje, a Senior Meteorologist with Weatherzone, said.
"It was certainly the hottest place in Australia," he said.
A map published by the University of Maine's Climate Change Institute shows Australia was the hottest continent when it came to maximum temperatures globally.
Mr Cronje said that we were unlikely to see any more record breaking temperatures this week but that temperatures could still break the mid-40s.
The hot weather is set to stick around for the next few days with maximums above 30 expected in the city over the next two days.
The mercury failed to drop below 22 degrees overnight in the city with humidity rising as high as 80 per cent during the early hours of Monday.
Penrith's record-breaking day didn't cool off quickly with temperatures above 30 degrees still being recorded at 7.30pm and humidity as high as 91 per cent overnight.
Sydney's west is expected to break 40 degrees on Monday with Penrith expecting a top of 42 and Richmond a top of 41.
Parramatta and Liverpool will go close to the 40 degree mark with both suburbs expecting a maximum of 39.
It will be a bit cooler closer to the shore with Sydney city expecting a high of 33 degrees.
Rain is expected across the Sydney region with showers most likely during the afternoon and evening with a chance of a thunderstorm as well.
A total fire ban remains in place for the greater Sydney region although the fire danger rating was downgraded overnight from severe to very high.
Rain is expected for the rest of the week although there are unlikely to be any heavy drenchings.
The mercury is expected to stay below 30 between Wednesday and Sunday in the city but Penrith could experience temperatures in the mid-30s on Friday and Saturday.
There is the chance for a few thunderstorms throughout the region during the week as well.
Weatherzone is owned by Fairfax media, owner of this website.
