ified ▁into ▁four ▁types : ▁hot , ▁sem iar id , ▁coast al , ▁and ▁cold . ▁ ▁Hot ▁desert s ▁experience ▁warm ▁temper atures ▁year ▁round , ▁and ▁low ▁annual ▁precip itation . ▁Low ▁levels ▁of ▁hum id ity ▁in ▁hot ▁desert s ▁contribute ▁to ▁high ▁day time ▁temper atures , ▁and ▁extensive ▁night time ▁heat ▁loss . ▁The ▁average ▁annual ▁temperature ▁in ▁hot ▁desert s ▁is ▁approximately ▁ 2 0 ▁to ▁ 2 5   ° C , ▁however , ▁extreme ▁weather ▁conditions ▁can ▁lead ▁to ▁temper atures ▁r anging ▁from ▁- 1 8 ▁to ▁ 4 9   ° C . ▁▁ ▁Rain fall ▁generally ▁occurs ▁in ▁concentr ated ▁burst s , ▁followed ▁by ▁long ▁periods ▁of ▁dry ness . ▁Sem iar id ▁desert s ▁experience ▁similar ▁conditions ▁to ▁hot ▁desert s , ▁however , ▁the ▁maximum ▁and ▁minimum ▁temper atures ▁tend ▁to ▁be ▁less ▁extreme , ▁and ▁generally ▁range ▁from ▁ 1 0 ▁to ▁ 3 8   ° C . ▁Coast al ▁desert s ▁are ▁cool er ▁than ▁hot ▁and ▁sem iar id ▁desert s , ▁with ▁average ▁summer ▁temper atures ▁r anging ▁between ▁ 1 3 ▁and ▁ 2 4   ° C . ▁ ▁They ▁also ▁feature ▁higher ▁total ▁ra inf all ▁values . ▁Cold ▁desert s ▁are ▁similar ▁in ▁temperature ▁to ▁coast al ▁desert s , ▁however , ▁they ▁receive ▁more ▁annual ▁precip itation ▁in ▁the ▁form ▁of ▁snow fall . ▁Des ert s ▁are ▁most ▁notable ▁for ▁their ▁dry ▁clim ates ; ▁usually ▁a