Total fire bans remain for parts of SA

Total fire bans will remain for parts of South Australia but a cooler change is set to bring relief to Adelaide.

Severe fire danger is forecast for the northeast pastoral, Flinders, mid north, Riverland and Murraylands districts on Tuesday.

Temperatures are set to stay in the high 30s in parts of those areas after days of extreme heat.

Adelaide will get some respite after sweating through an overnight low of 30.7C on Monday - its highest minimum in 118 years.

The mercury will fall to 19C before reaching 28C on Tuesday.