Hike to the Top of Longs Peak in Rocky Mountain National ParkAtmospheric conditions on Longs Mountain is capricious. Conditions on Longs Peak could vary drastically. It is essential to check the forecast and be equipped for any kind of weather conditions ascending Longs Mountain. The is noted for its sudden weather changes and dangerous weather events. Dressing in multiple layers and carrying extra gear like rain jackets, hats, and mittens is essential to be protected from inclement weather.