Glen Canyon National Recreation Area, Grand Staircase-Escalante National Monument, and Rainbow Bridge National Monument are at the heart of the Colorado Plateau – an arid high desert region. Elevations in the parks range from 3,200 feet to nearly 9,000 feet. Elevations on and around the shoreline of Lake Powell are in the 3,600 to 4,000 foot range.
Spring weather in the Glen Canyon/Grand Staircase/Escalante region is highly variable, ranging from cold and potentially snowy in late March to strong winds in April and May, and the chance of spring storms at any time. But, spring days can also be mild and pleasant.
Summers in our region can be very hot, exceeding 100°F (37°C) in late June and Early July. By mid-July, the summer monsoon season reaches the area bringing the potential of afternoon thunderstorms and the threat of flash floods.
Fall is the perfect time in our area. Though fall storms are a possibility and snow can fall as early as November, most days are great for hiking in this landscape and a pleasant time to be on Lake Powell.
Winter are moderately cold with nighttime temperatures often below freezing. Though Page, Arizona, sees only occasional snow, the southern reaches of Grand Staircase-Escalante NM can receive a moderate amount of snow during winter storms, and the northern reaches along Utah Highway 12 can often receive large amounts of snow with nighttime temperatures usually below freezing.
Overall, temperatures can range from 110°F (38°C) in June and July to as low as 0°F (-16°C) in December and January. Our average annual rainfall is approximately 6 inches (15.2 cm), with our wettest months usually being March, October, and during the monsoon season of mid-July through mid-September.
When planning your clothing for a trip to our region, it is best to bring clothing suitable to layering. And, don't forget the hat, sunglasses, and sunscreen.