There is no meaningful answer to this question as there are over 2 dozen major desert regions in the world and each has different climate statistics. There are hot deserts, there are cold deserts and there are cool deserts.
average high/low temperatures
desert
It depends on your location.
Desert biome is very dry, characterized by low precipitation levels and high temperatures.
Deserts get little rainfall and some of them are quite hot - but not all. There are cold deserts also.
In summer, the average high temperatures (daytime) are generally between 40 °C (104 °F) and 45 °C (113 °F), while the average low temperatures (nighttime) are generally around 20 °C (68 °F) and 25 °C (77 °F) in a hot desert such as the Sahara desert. In winter, the average high temperatures can easily be around 20 °C (68 °F) and 25 °C (77 °F) but the average low temperatures are quite low for a hot climate, since these ones often turn around 5 °C (41 °F) and 10 °C (50 °F). A hot desert doesn't really know the cold throughout the year except during the winter nights.
Low: 55.0916667 High: 76.2833333 These are the average temperatures.
50 degrees Fahrenheit
no clue & i asked first
In Santa Fe, New Mexico the average temperatures are: September high 78, low 47; October high 67, low 35; November high 53, low 25. In Albuquerque, New Mexico the average temperatures are: September high 81, low 58; October high 69, low 46; November high 56, low 34.
the average temperature for California is 83 degrees Fahrenheit
A cactus typically lives in desert biomes, where they are adapted to survive in arid conditions with low rainfall and high temperatures.