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| The Alluvial Fan, just west of Horseshoe Park and on the way to Old Fall River Road, is a favorite driving destination. NPS photo by John Marino |
Summer temperatures typically top out in the 80s with lows hitting the 40s at night. Remember, though, that each 1000-foot gain on average means a 3 degree drop in temperature, so you may want to carry extra clothing depending on your destination. For example, if the high in Estes Park is 70 degrees, expect it to be a crisp 57 at the Alpine Visitor Center.
During spring and summer, sun-drenched skies are common during the morning, but afternoon thunderstorms can form quickly and result in lightning, hail and high winds. If clouds build up anytime between 9 a.m.-noon, you probably have about two hours before a storm; you’re usually safe if clouds build after noon. If clouds build before 9 a.m., the day probably will be lost to rain.
Beware that July is the busiest month, and with the national park’s growing popularity, certain sections – especially those closest to Estes Park and attractions right off the road – can be crowded.
Post-Labor Day September often marks an ideal time to visit. Not only are there smaller crowds, but dry weather and cooler temperatures (though often only reaching the 50s for a high) dominate. There’s the added bonus of changing leaf colors at the lower elevations and bugling bull elks in the distance. By mid-October, though, snow usually falls, closing Trail Ridge Road through winter until late May.
When visiting Rocky Mountain National Park, no matter what the season, three great sites you must see include:
• 14,000-Foot Peaks (Bluebird Lake Trail)
• Mountain Waterfalls (Alberta Falls Trail)
• Mountain Wildlife (Lawn Lake Trail)
Learn more about the park's day hiking trails in my Best Sights to See at Rocky Mountain National Park.
