Temperatures in the canyon are often 5-10 degrees hotter than on the rim. Outdoor activities during this time can be dangerous. Stay safe!
Avoid hiking during the heat of the day.
Stay on trails.
Drink 1 liter of water per person, per mile.
Hike with friends.
The following trails will close from 11 a.m.-5 p.m. on days when the National Weather Service issues a heat advisory. Please observe these closures for your safety.
