So how hot did it get over the weekend? The National Weather Service in Nebraska demonstrated the effects of the brutal heat by trying to bake biscuits using nothing but a car and the sun….with the heat index reaching 103 degrees. The biscuit dough was placed on a cookie sheet inside an enclosed vehicle on Thursday morning along with a thermometer. The biscuits usually take about 14 to 17 minutes in 350-degree heat to bake. Inside the car under the sun, the pan reached 185 degrees in 60 minutes. About eight hours later, the Omaha National Weather Service posted that the otuside of the biscuit was actually edible. The middle was still pretty doughy though.