Weather on Longs Summit may be inconstant. Conditions at the summit of Longs Peak may shift dramatically. It's vital to monitor the weather forecast and be prepared for any kind of climate conditions hiking on Longs Peak. The peak is famous for its abrupt climate shifts as well as dangerous storms. Wearing the right clothes in multiple layers and carrying extra gear like precipitation coats, hats, and mittens is critical to stay sheltered against inclement weather.