Learn more about the latest Phoenix area weather forecast and conditions with Most Accurate Forecast from ABC15.

The cold blast could immobilize iguanas and cause them to fall out of trees. The lizards start getting sluggish in temperatures below 50 degrees and are known to "freeze" when temperatures dip into the 30s and 40s, according to the Florida Fish and Wildlife Conservation Commission.

This weather benefits the Hawkeyes and their strong ground game, which has to be a key component to maintaining possession against USC. The Trojans allow 4.3 yards per carry, and the rain could turn this into a contest of running the ball.