Fire bans remain in place in SA

South Australia has made it through a scorching day without serious bushfire damage, but fire bans will remain in place in several districts.

Total fire bans were in place across most of the state on Friday, with catastrophic warnings declared in the mid northwest pastoral and west coast districts.

The temperature reached 43.7C in the west coast town of Ceduna and peaked at 36.2C in Adelaide, slightly lower than the 39C forecast.

Bureau of Meteorology forecaster Matt Collopy says while the state escaped major fire damage, extreme weather remains a concern.

"We're seeing a bit of lightning activity, so we do have a severe weather warning for parts of the west coast and the northwest pastoral (districts)," he told ABC radio on Friday.

"We're concerned about wind gusts out of thunderstorms in those areas."

Severe fire danger has been declared in the northwest pastoral, northeast pastoral and Flinders districts on Saturday.

A 24-hour total fire ban will come into effect in those districts from midnight on Friday, the Country Fire Service says.