Sahara desert

The highest recorded air temperature in the Sahara was 47 °C (116,6 °F).

An excerpt from the article 22 facts about Sahara desert

During the day, average temperatures are 30-35 °C (86-95 °F). At night, the temperature drops to 10-20 °C (50-68 °F), and occasionally it can fall below 0 °C (32 °F).