by cynthia23 » Mon May 09, 2016 2:16 pm
Hi Roncruiser--yes, if you leave at 3 or 4 am in late May, you will mostly 'beat the heat' (although it will still be quite unpleasantly warm.) The danger lies in the reality that many people bonk on their first attempt up Skyline (for a variety of reasons, but usually because they have underestimated how draining it is) and have to turn back midway and midmorning. If that happens, you will 'meet the heat'--that is, during the time you are climbing, the temps below are steadily climbing, and by the time you return, you will be hiking down in temps that are (likely) going to be in the low hundreds--a sure recipe for heat exhaustion and dehydration. This is how many of our rescues unfold. So I and most of the people on this board really strongly recommend that novices wait until the 'safe months' of October and November to try Skyline, when a retreat does not have catastrophic consequences. If you're anxious to get going on your project a bit sooner, you might consider taking the tram up and exploring the second part of the route, to the peak, or traveling to Idyllwild and hiking the west side of the mountain, or driving to
Palm Springs early one a.m and simply going up Skyline for an hour or to about two thousand feet, and then coming down. This will help familiarize you with the grade and difficulties of the trail and better prepare you for a full attempt in October or November.
Even if you are not a novice it is still quite risky, because you never know when you're going to have a bad day, and I certainly, nowadays, would never attempt Skyline post-May. The general rule of thumb is to never attempt it on days the valley temps high forecast is above 92 (but actually we have had deaths and rescues on days when temps were in high 80's, too).
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