In the midst of a hot spell, cloud cover and a hot airmass over South Australia caused some locations to have their warmest morning for a while.

A low and trough over SA has caused northwesterly winds to develop and draw in heat from the northwest. This has seen temperatures spike across parts of the state. The West Terrace site in Adelaide reached a top of 39 degrees on Saturday which was the site's highest temperature recorded since the mercury hit 43 degrees in late January.

However, the low pressure system also brought some cloud into the region, which helped to trap Saturday's heat and prevent the temperature from dropping significantly overnight. As a result, Adelaide only recorded a minimum temperature of 25.3 degrees just after 6am. This minimum was the highest that the West Terrace site had recorded since March of this year. Furthermore, it was the warmest November night at the site for 3 years.

The temperature is on the rise again today as the airmass remains warm. However, a change should push over Adelaide after midday which should lead to a few days of average temperatures.

Image: ACCESS-C model of surface temperature at 12pm on Sunday

This respite will not last long as another period of heat, likely to be longer and more intense, looks to start on Wednesday. Towards the end of next week Adelaide could see the mercury climb above 40 degrees.