The parks are open 24 hours a day, 365 days a year, weather permitting. Our highest visitation is in July and August. Campsites may be difficult to obtain on summer weekends and holidays, as well as off-season holidays. Visitor Centers & Facilities
Because of the extreme elevation range in the parks, weather conditions vary greatly from area to area and day to day. Please see the links below for more information on the season that corresponds to the time when you will visit the parks. Opening and closing dates for facilities and services may change due to weather or other circumstances.