Weather upon Longs Mountain is unpredictable. Conditions at the summit of Longs Peak may vary greatly. It can be vital to monitor the forecast and be prepared for any kind of
climate conditions ascending Longs Peak. The is known for its unexpected weather variations as well as hazardous storms. Wearing the right clothes in layers and carrying extra gear like rain coats, caps, and gloves is essential to be protected from the elements.
Longs Peak Keyhole Route US National Park Service