All deserts have low humidity and little cloud cover to hold the daytime heat. Once the sun sets they quickly cool down. Some deserts, particularly those further north, will be very hot in the summer but bitterly cold in winter. The Gobi Desert is a prime example.
Some deserts, such as the Gobi Desert and Great Basin Desert, have summers that can be quite hot but winters can be bitterly cold.
Hot desert
A hot desert
The Arabian Desert is a hot desert.
The Gibson Desert is a hot desert.
The Arabian Desert is a hot desert.
The Kalahari Desert is a hot desert.
The Gibson Desert is a hot desert.
Hot during the day...I assume it can get cold at times however.
The Simpson Desert is cold at night but Hot during the day. It is a Hot desert
The Patagonian Desert is considered a cold desert.
The Kalahari is a subtropical hot desert.
The Taklamakan Desert is classified as a cold desert. It can get quite hot in the summer but winters can turn bitterly cold.