The coolish temperatures are due to the altitude - 8,000 to 10,000 feet above sea level in the fire area, which is about 4,000 feet higher than Cedar City.
Fire officials told the Salt Lake Tribune that much of the firefighting was being done from the air and hand crews were protecting structures where they can safely do so. "Firefighter safety and public safety is always our No. 1 priority".
Fire was reported at 1220pm on Saturday June 17th with the fire rapidly spreading upslope.
Utah wildlife officials said the fire was the result of human action, but did not say specifically how it started. Nick Howell with the Bureau of Land Management said the blaze had burned about 75 acres on the west side of I-15.
A Brian Head town emergency notice said there was no estimate on when or how the fire would be contained.
There are now no evacuations in place.
The Choke Cherry fire burning 5 to 6 miles southwest of Circleville in Piute County was 50 percent contained Monday morning, according to a news release from the Central Utah Fire Agency. (Note: one acre is equivalent to one football field) and the cause is under investigation. The Forest Service has issued road and trail closures as well.
At least two other fires are ongoing in Utah. It has burned 2,453 acres.
This page will update with more information as details become available.