How to Hike Chasm Lake Helpful Tips Hiking Stats PhotosAtmospheric conditions upon Longs Peak is unpredictable. Conditions at
the summit of Longs Summit may vary drastically. It is vital to check the forecast and be equipped for any kind of weather conditions before Longs Summit. The mountain is recognized for its sudden climate changes and dangerous weather events. Wearing the right clothes in multiple layers and bringing additional gear like precipitation jackets, caps, and mittens is critical to be protected from the elements.