Dry desert air can swing more than 20°C between noon and night
With little water vapor or cloud cover to hold heat, desert ground soaks up fierce daytime sun then radiates it to a clear sky after sunset — often dropping air temperature by more than 20°C overnight.
Moist climates buffer those swings; arid ones amplify them, so jackets appear at dusk even after a scorching afternoon.
Dryness is a thermostat setting. In deserts, the same day can feel like two seasons because the air cannot bank yesterday’s warmth.
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