Every hiker who has heard of it dreams of walking the Bright Angel Trail, the famous footpath that snakes from the South Rim of the Grand Canyon all the way to the Colorado River on the canyon floor, with spectacular scenery almost every step of the way. If you’re going to hike it, May is one of the best months to do so, with average daily highs at 72 degrees on the rim and in the 80s about halfway down, at Indian Garden.