Adelaide has woken to its coldest August morning since 1888, when South Australia was still a separate colony, with the mercury dipping to just 0.9C, 7C below the month’s average.
It was also the coldest morning in the city in six years.
The cool temperatures come in the wake of a very strong cold front that came through late last week and even brought snow to the Adelaide Hills.
Weatherzone Meteorologist Brett Dutschke told 9NEWS.com.au the chill was partly due to clear skies and such light winds.
Temperatures did get below freezing in some northern suburbs this morning, while parts of the north of the state got colder than -5C.
Adelaide is expected to have a similar morning tomorrow, with widespread frost, but it should get warmer as the week continues.
Low temperatures turn The Riverland into a winter wonderland. (supplied)