Lower Sonoran
This climate is considered a subarctic climate. It typically features short, cool summers with temperatures below 10°C and long, bitterly cold winters with temperatures well below freezing. Precipitation levels can vary but are generally lower than in other climates.
The temperature in the desert can vary widely, with daytime temperatures often exceeding 100°F (37.8°C) but dropping significantly at night. Humidity is typically low in deserts, often below 30%. These conditions result in extreme temperature fluctuations between day and night.
The Karakum Desert has a continental climate, characterized by hot summers with temperatures reaching up to 50°C (122°F) and cold winters with temperatures dropping below freezing. Precipitation is low and sporadic, with most rainfall occurring in the spring.
No, it can also be quite cold in a dry climate. A good example is the Antarctic Desert where temperatures can plunge to well below -100 degrees F. The Patagonian Desert stays perpetually chill all year long and the Gobi Desert may experience temperatures of -40 degrees in winter.
The link below is to a website that shows the climate history of Frankfurt as far back as 1934.
Libyan climate can be divided into two parts viz. Mediterranean in the north and desert in the south. Libya has a coastline onto the Mediterranean Sea in the North, and the climate is characterised by Hot Dry Summers, and Mild Wet Winters, This climatic type gives way as you move south into the Sahara Desert, and the climate is characterised Hot Dry Summer and Warm/Hot Dry Winter. What rainfall that comes in these climates tends to be very infrequent and torrential, when it comes. Also in the desert climate, the diurnal (daily) temperature range can be very large, to the point of 40+ oC by day and frost by night ( below 0oC ).
The savanna is not a desert, it is a grassland. The savanna receives more rain than a desert. The savanna of Africa is located below the Sahara.
Peru has a varied climate in the Summer and Winter.
The Taklamakan Desert is in northwestern China, below the Gobi Desert.
Each desert has its statistics and temperatures can vary from desert to desert. Temperatures in the Antarctic Desert can plunge to over 100 degrees F. below zero or be has high as 140 degrees F. above zero in the Sahara or Mojave Desert.
The climate zone below the Antarctic Circle is polar, characterized by extremely cold temperatures, high winds, and little precipitation. This region experiences long periods of darkness in winter and continuous daylight in summer.
A typical desert is dry but not necessarily hot. There are cold deserts (Antarctica), there are cold winter deserts and there are cool coastal deserts. The only thing they have in common is that all receive less than 10 inches (250 mm) of precipitation per year on average. Temperature does not define a desert. The lack of humidity and cloud cover in a desert allows more sunlight to penetrate the atmosphere and heat the land below in those deserts with a hot climate.