Explanation

• Nights are cooler in the deserts than in the plains because Sand radiates heat more quickly than the earth.
• Because deserts have such little water vapor in the air, it makes it harder to trap heat or cold in a desert.
• At night, the sun no longer heats the desert and the heat from the day doesn't stay trapped.
• Because of this, some deserts can get cold at night, dropping to below 40F, which is definitely coat weather.