In short:

Adelaide recorded its coldest morning since August 27, 2021, with the city reaching a minimum temperature of 2.6 degrees Celsius at 5:50am. 

Toward Home Alliance said it had supported 19 people overnight, with that number expected to rise throughout the week.

What’s next?

Maximum temperatures will increase slightly as the week progresses. 

Adelaide has shivered through its coldest morning in years, with temperatures dropping below zero degrees Celsius in some parts of the city overnight.

Bureau of Meteorology (BOM) senior forecaster Simon Timke told ABC Radio Adelaide it was the coldest morning in the city since August 27, 2021.

He said Adelaide’s minimum temperature dropped to 2.6C at 5:50am, while it was cooler in the suburbs.

“Parafield got down to minus 0.1C, Edinburgh 0.6C, Mount Lofty 1.1C, Adelaide Airport even 1.5C so, quite a cold start,” he said. 

The cold weather extended to regional areas of South Australia.(Supplied: Kelly Gertig)

“Most of those minimum temperatures occurred a little bit earlier. We’ve had a little bit of north-westerly wind pick up which has lifted the temperature a tiny bit.”

The cool morning extended to regional parts of South Australia, with Coonawarra in the state’s south-east and Leigh Creek and Roxby Downs in the Far North all recording temperatures below zero. 

A frost warning has been issued for parts of the Mount Lofty Ranges, Mid North, Riverland, Murraylands, Upper South East and Lower South East for Wednesday morning, with temperatures forecast to drop down to -2C.

Homelessness shelters increase services

On Sunday, Human Services Minister Nat Cook issued a Code Blue for 10 areas across South Australia from Monday evening to Friday morning.

The state government said the Code Blue activation unlocked additional accommodation and outreach services for South Australia’s most vulnerable.

Toward Home Alliance senior manager Shaya Nettle said her organisation had bolstered its response last night in time for the forecast cold weather.

Slightly warmer weather is forecast for the end of the week.(Supplied: Kelly Gertig)

“We have an … outreach team that covers the entire CBD and North Adelaide areas to let people know additional supports are available, including Baptist Care SA’s WestCare site,” she said.

She said the WestCare site supported more than 19 people overnight, but she expected that number to rise throughout the week.

“The first night is always the lowest number and as it nudges through the week those numbers will increase,” she said. 

Mr Timke said the cooler conditions were expected to last tomorrow with a sunny top temperature of 14C for Wednesday.

Maximum temperatures will increase slightly towards the end of the week, with top temperatures forecast to reach 17C on Friday, 16C on Saturday and 15C on Sunday, according to the BOM. 

Posted , updated