Atmospheric conditions upon Longs Summit may be fickle. The weather atop Longs Summit may vary dramatically. It's important to keep an eye on the forecast and be prepared for any kind of weather conditions hiking on Longs Summit. The peak is renowned for its unexpected weather variations as well as dangerous weather events. Wearing the right clothes in multiple layers and bringing spare gear like precipitation coats, caps, and gloves is essential to stay protected from the elements.