system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are deserts so hot in the daytime but freezing cold at night?
gpt
Largely due to low humidity in the dessert. Humid air tends to hold heat for a longer time than try air. Combine that with the sand heating up but not storing heat, and the heat of the sun during the day gets lost quickly resulting in cold.