What is the all time temperature in Sahara Desert?

The all-time highest recorded temperature in the Sahara Desert is 57.8 °C (136.0 °F) in Kebili, Tunisia on July 7, 1982. The all-time lowest recorded temperature in the Sahara Desert is -18 °C (-0.4 °F) in Biskra, Algeria, on January 18, 1905.