July 28, 2016 10:10 am Hot Car Deaths Persist Despite Reports, Warnings The temperature inside a vehicle can reach dangerous levels quickly. On average, it only takes 10 minutes for the temperature inside a car to climb 20 degrees. Wake Up to Something Good 3:28 Mother mourns loss of son killed in North Texas flooding 1:57 ‘The Wall That Heals' comes to Frisco 1:51 Child killed in Johnson County flooding 0:38 Pet of the Week: Matrix! 2:23 Parents of Fort Worth drive-by shooting victims recalls horrifying moments