Generally just not an issue. The biggest problem with deserts is battery degradation and not so much range problems.

Air conditioning from 110F to 75F really drags down the range.

Had a thermometer read 170F 76C inside my black on black vehicle with windows cracked.

Decided to keep my battery devices in a cooler with cool and frozen water bottles to drink when I return. Phone, camera batteries, and a portable vehicle starter.