Atmospheric conditions upon Longs Mountain is capricious. The weather on Longs Mountain can fluctuate drastically. It can be crucial to keep an eye on the forecast and be ready for any kind of climate conditions before Longs Summit. The mountain is famous for its unexpected weather changes and risky weather events. Wearing the right clothes in layers and bringing extra equipment like precipitation coats, caps, and mittens is crucial to be sheltered against the elements.