The game will be televised by ESPN2.
Saturday's game against Oregon State and the Thursday, Oct. 3 game against UCLA will also kick off at 8 p.m.
The Utes went 3-6 in night games last year.
The Utes have installed lights on their practice field and practiced at night a few times during the preseason to get a feel for playing at night.
However, Whittingham said he has no plans to hold late-night practices.
Learning under fire
Freshman Isaac Asiata started at right tackle against Weber State in place of sophomore Siaosi Aiono who was sidelined with a foot injury.
While Aiono is expected to return this week, there wasn't much of a drop off between Aiono and Asiata.
Asiata, a 6-foot-4, 315-pounder, earned solid reviews from Whittingham for his first start.
"His future is bright right now," Whittingham said. "He is the sixth guy in if someone goes down and we have to shuffle the deck, but he is an outstanding lineman for us. It was good for him to get experience."
Whittingham said backup running back Lucky Radley, who had 13 carries for 111 yards and two touchdowns against the Wildcats, could get more time in the future.
"He played extremely well and earned the right to carry the football more," he said.
Fellow backup Karl Williams is hobbled with a foot injury, leaving Radley as the best option to spell Kelvin York and James Poole, the two backs expected to get the most carries.