✓ Updated February 2026
Weather data and travel information verified current
Best Time to Visit Colorado, USA: May or Jun 2026

Quick Answer:
For a truly sophisticated Colorado experience, aim for late September through October, when the aspen trees ignite the mountainsides in a breathtaking display of gold and crimson, painting the crisp air with vibrant hues. Imagine the crunch of fallen leaves underfoot during a scenic hike, followed by the cozy warmth of a lodge as winter months approach, bringing pristine snow for world-class skiing and a serene, hushed beauty. If you prefer wildflowers and milder temperatures, the late spring months of May and June offer lush green valleys and fewer crowds before the summer rush.
Best Months to Visit:
Airport Code
DEN
Coordinates
39.55°, -105.78°

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Top Things to Do
Sunrise Hot Air Balloon over the Rockies
Drift silently above the majestic Rocky Mountains as the first rays of sun paint the peaks in hues of pink and gold. This breathtaking experience offers unparalleled, 360-degree views of snow-capped summits and verdant valleys, a truly unforgettable start to your Colorado adventure. Look for local operators in towns like Denver or Colorado Springs for the most scenic flights.
Exploring the Artistic Enclave of Manitou Springs
Wander through the charming streets of Manitou Springs, a quirky mountain town brimming with independent art galleries, unique boutiques, and natural mineral springs. Sip from the various effervescent springs dotted around town – each with its own distinct mineral taste – and discover local artisan crafts. Don't miss the historic Penny Arcade for a dose of nostalgic fun.
Hiking the Maroon Bells in Early Autumn
Witness the iconic Maroon Bells, two majestic peaks reflected in the pristine waters of Maroon Lake, at their most spectacular during the fall foliage season. The vibrant aspens create a fiery spectacle against the rugged mountain backdrop, making for postcard-perfect photos. Access is restricted during peak season, so plan to take the shuttle bus from Aspen.
A Taste of the High Plains at a Local Brewery
Venture beyond the mountain towns to discover Colorado's burgeoning craft beer scene in unexpected places like Fort Collins or Grand Junction. Sample innovative brews inspired by local ingredients and enjoy the laid-back atmosphere of a true Colorado gathering spot. Many breweries offer tours and tastings, giving you a behind-the-scenes look at the brewing process.
💡 Travel Tip: For the best value on hotels during this season, check current rates on Trip.com.
Essential Travel Tips
Layers are your best friend in Colorado, no matter the season! Mornings can be chilly even in summer, especially at higher elevations. Think t-shirts, a fleece or puffy jacket, and a waterproof shell – you can shed layers as the day warms up, or add them back if you head to the mountains.
Altitude sickness is real, so take it easy your first day or two. Drink TONS of water (more than you think you need!) and avoid alcohol and heavy meals initially. If you're heading to Denver, you're already at a mile high, so be mindful of this even in the city.
Renting a car is almost essential if you plan to explore beyond Denver, but be prepared for mountain driving. Check road conditions on COTrip.org before you head out, especially in winter – chains may be required for certain passes. Consider a 4WD vehicle if you're visiting during snow season.
Don't leave without trying some Rocky Mountain Oysters (they're bull testicles, but a local delicacy!) or a hearty bison burger. For a more casual bite, look for green chili – it's a Colorado staple, often served over burritos or fries, and it's delicious!
Many mountain towns have a 'resort fee' or 'lodging tax' that can add a significant percentage to your hotel bill. Factor this into your budget when booking accommodation in places like Aspen, Vail, or Breckenridge. It's often not included in the initial advertised price.
Colorado has a strong outdoor recreation culture, so be prepared for people to be friendly and chatty, especially on trails. Always yield to uphill hikers and bikers, and pack out everything you pack in – Leave No Trace principles are highly respected here.
💡 Travel Tip: If you're planning your trip, it's worth checking flight prices on Trip.com before you decide.
Weather Details
Monthly Weather Data Table
| Month | High (°C) | Low (°C) | High (°F) | Low (°F) | Rainfall (mm) | Rain Days | Daylight (h) |
|---|---|---|---|---|---|---|---|
| Jan | -1°C | -14°C | 30°F | 7°F | 15mm | 5 days | 9.7h |
| Feb | 2°C | -11°C | 36°F | 12°F | 18mm | 5 days | 10.7h |
| Mar | 7°C | -6°C | 45°F | 21°F | 25mm | 7 days | 12h |
| Apr | 13°C | -1°C | 55°F | 30°F | 30mm | 8 days | 13.4h |
| May | 18°C | 4°C | 64°F | 39°F | 45mm | 10 days | 14.5h |
| Jun | 24°C | 9°C | 75°F | 48°F | 40mm | 9 days | 15.2h |
| Jul | 27°C | 12°C | 81°F | 54°F | 45mm | 9 days | 15h |
| Aug | 26°C | 11°C | 79°F | 52°F | 40mm | 8 days | 14.2h |
| Sep | 21°C | 6°C | 70°F | 43°F | 30mm | 7 days | 12.8h |
| Oct | 14°C | 0°C | 57°F | 32°F | 25mm | 7 days | 11.5h |
| Nov | 5°C | -7°C | 41°F | 19°F | 20mm | 6 days | 10.2h |
| Dec | -1°C | -13°C | 30°F | 9°F | 15mm | 5 days | 9.5h |
Colorado, USA Month by Month: Complete Guide
Planning your trip to Colorado, USA? Here's what to expect each month:
Jan in Colorado, USA
Weather
-1°C°C / 30°F°F
5 days rainy days • 15mmmm
What to Expect
Winter season with cooler temperatures. Fewer tourists but some attractions may have limited hours.
Crowd Level
🟢 Low - Quiet season, easy to find accommodation
Feb in Colorado, USA
Weather
2°C°C / 36°F°F
5 days rainy days • 18mmmm
What to Expect
Late winter, beginning to warm up. Good for budget travelers seeking lower prices.
Crowd Level
🟢 Low - Quiet season, easy to find accommodation
Mar in Colorado, USA
Weather
7°C°C / 45°F°F
7 days rainy days • 25mmmm
What to Expect
Spring begins, mild weather. Shoulder season with moderate crowds.
Crowd Level
🟢 Low - Quiet season, easy to find accommodation
Apr in Colorado, USA
Weather
13°C°C / 55°F°F
8 days rainy days • 30mmmm
What to Expect
Spring in full bloom. Pleasant temperatures and growing tourist activity.
Crowd Level
🟡 Moderate - Comfortable crowds, good availability
May in Colorado, USA
⭐ Best TimeWeather
18°C°C / 64°F°F
10 days rainy days • 45mmmm
What to Expect
Late spring, excellent weather. One of the best times to visit for most travelers.
Crowd Level
🟡 Moderate - Comfortable crowds, good availability
Jun in Colorado, USA
⭐ Best TimeWeather
24°C°C / 75°F°F
9 days rainy days • 40mmmm
What to Expect
Early summer, warm and sunny. Peak season begins, book accommodations early.
Crowd Level
🔴 High - Peak tourist season, book early
Jul in Colorado, USA
⭐ Best TimeWeather
27°C°C / 81°F°F
9 days rainy days • 45mmmm
What to Expect
Peak summer season. Hot weather and highest tourist crowds. Most expensive time.
Crowd Level
🔴 High - Peak tourist season, book early
Aug in Colorado, USA
⭐ Best TimeWeather
26°C°C / 79°F°F
8 days rainy days • 40mmmm
What to Expect
Peak summer continues. Very crowded but great weather for outdoor activities.
Crowd Level
🔴 High - Peak tourist season, book early
Sep in Colorado, USA
⭐ Best TimeWeather
21°C°C / 70°F°F
7 days rainy days • 30mmmm
What to Expect
Early fall, shoulder season. Weather still good, crowds decreasing. Great value.
Crowd Level
🟡 Moderate - Comfortable crowds, good availability
Oct in Colorado, USA
Weather
14°C°C / 57°F°F
7 days rainy days • 25mmmm
What to Expect
Fall season, mild temperatures. Lower crowds and good prices. Comfortable for sightseeing.
Crowd Level
🟡 Moderate - Comfortable crowds, good availability
Nov in Colorado, USA
Weather
5°C°C / 41°F°F
6 days rainy days • 20mmmm
What to Expect
Late fall, cooler weather. Off-season begins, significant discounts available.
Crowd Level
🟢 Low - Quiet season, easy to find accommodation
Dec in Colorado, USA
Weather
-1°C°C / 30°F°F
5 days rainy days • 15mmmm
What to Expect
Winter season, holiday atmosphere. Festive but can be cold. Mixed crowds.
Crowd Level
🔴 High - Peak tourist season, book early
All Things to Do in Colorado, USA
Sunrise Hot Air Balloon over the Rockies
activityDrift silently above the majestic Rocky Mountains as the first rays of sun paint the peaks in hues of pink and gold. This breathtaking experience offers unparalleled, 360-degree views of snow-capped summits and verdant valleys, a truly unforgettable start to your Colorado adventure. Look for local operators in towns like Denver or Colorado Springs for the most scenic flights.
Best time: Sep-Mar
Exploring the Artistic Enclave of Manitou Springs
culturalWander through the charming streets of Manitou Springs, a quirky mountain town brimming with independent art galleries, unique boutiques, and natural mineral springs. Sip from the various effervescent springs dotted around town – each with its own distinct mineral taste – and discover local artisan crafts. Don't miss the historic Penny Arcade for a dose of nostalgic fun.
Hiking the Maroon Bells in Early Autumn
natureWitness the iconic Maroon Bells, two majestic peaks reflected in the pristine waters of Maroon Lake, at their most spectacular during the fall foliage season. The vibrant aspens create a fiery spectacle against the rugged mountain backdrop, making for postcard-perfect photos. Access is restricted during peak season, so plan to take the shuttle bus from Aspen.
Best time: Sep-Oct
A Taste of the High Plains at a Local Brewery
foodVenture beyond the mountain towns to discover Colorado's burgeoning craft beer scene in unexpected places like Fort Collins or Grand Junction. Sample innovative brews inspired by local ingredients and enjoy the laid-back atmosphere of a true Colorado gathering spot. Many breweries offer tours and tastings, giving you a behind-the-scenes look at the brewing process.
Stargazing in Great Sand Dunes National Park
natureExperience the magic of the Milky Way stretching across an inky black sky at Great Sand Dunes National Park, one of the best places in the US for stargazing. The vast, dark expanse above the towering dunes creates an otherworldly panorama, especially on a moonless night. Consider camping overnight for the full immersive experience.
Best time: May-Oct
Discovering the Dinosaur Ridge Trail
activityStep back in time along Dinosaur Ridge near Morrison, where you can walk among hundreds of fossilized dinosaur footprints and trackways preserved in ancient mud. This easily accessible outdoor museum offers a fascinating glimpse into prehistoric Colorado. Visit the visitor center for interpretive exhibits and guided tours.
Browsing the Independent Shops of Old Town Fort Collins
shoppingExplore the charming, historic Old Town Fort Collins, a vibrant district filled with unique, locally-owned boutiques, bookstores, and artisan shops. Find one-of-a-kind souvenirs, handcrafted jewelry, and local art while enjoying the lively atmosphere and historic architecture. This is the perfect place to find a treasure that tells a story.
Planning your Colorado, USA adventure? Enhance it with a customizable private tour guide via GoWithGuide—perfect for exploring beyond the city.
Getting Around Colorado, USA
Rental Car (with 4WD/AWD recommended)
For true exploration of Colorado's vast landscapes, from Rocky Mountain National Park to remote mountain towns, a rental car is almost essential. Opting for a 4WD or AWD vehicle is highly recommended, especially outside of summer, due to unpredictable mountain weather and unpaved roads.
Amtrak's California Zephyr
This iconic train route cuts through the heart of the Rockies, offering breathtaking scenery between Denver and Grand Junction. It's a relaxed way to see the mountains without the stress of driving, especially if you're not comfortable with mountain roads.
Bustang (Colorado's State Bus System)
Bustang offers intercity bus service connecting major population centers and popular destinations like ski resorts and national parks. It's a more affordable and eco-friendly alternative to driving for specific routes.
Ride-Sharing Services (Uber/Lyft)
Available in larger cities like Denver, Boulder, and Colorado Springs, ride-sharing is convenient for getting around urban areas or to/from the airport. Availability significantly drops off in smaller towns and rural mountain areas.
Ski Resort Shuttles
During the winter ski season, many resorts offer free or paid shuttle services connecting the base village to parking lots or nearby towns. Some also offer inter-resort shuttles.
💡 Travel Tip: This season usually means better deals — check what's available on Trip.com.
Similar Destinations
Frequently Asked Questions
When's the absolute best time to visit Colorado if I want to experience both stunning fall colors and fewer crowds?
For that perfect sweet spot, aim for mid-to-late September. The aspens typically start their golden transformation in the high country around then, offering breathtaking scenery without the peak summer or winter rush. You'll find lodging more available and hiking trails less congested, making it ideal for soaking in the vibrant fall foliage.
I'm planning a road trip through the Rockies. What's a common mistake people make with driving in Colorado, especially in winter?
The biggest pitfall is underestimating the weather's rapid changes and not being prepared for winter conditions, even if the forecast looks clear. Always check road conditions on COTrip.org before heading out, and ensure your vehicle has good tires, or better yet, consider AWD/4WD if you're traveling between October and May. Mountain passes can close unexpectedly due to snow, so flexibility is key.
Beyond Denver and Aspen, what's a charming, less-touristy mountain town worth exploring?
You absolutely must check out Crested Butte. It's known as the 'Wildflower Capital of Colorado' in the summer and boasts incredible hiking and biking trails, but it retains a genuine, laid-back mountain town vibe year-round. The historic downtown is incredibly picturesque, and it's a fantastic base for exploring the surrounding Gunnison National Forest without the glitz of some other resorts.
I'm not a huge skier. What are some must-do Colorado activities outside of hitting the slopes in winter?
Don't let winter deter you! Many ski towns transform into winter wonderlands for other activities. Think snowshoeing through quiet forests, trying out fat-tire biking on groomed trails, or even taking a scenic gondola ride for stunning panoramic views without the skis. Some resorts also offer ice skating or cozy evenings by the fire with live music.
What's something about Colorado's altitude that visitors often overlook, and how should I prepare?
The most common oversight is not taking the altitude seriously enough, especially if you're coming from sea level. Drink *way* more water than you think you need starting a day or two before you arrive, avoid alcohol and heavy meals on your first day, and take it easy. Symptoms like headaches and fatigue are your body's way of telling you to slow down, so listen to it!
Are there any local 'rules of the road' or etiquette I should be aware of when hiking or visiting natural areas?
Absolutely! The 'Leave No Trace' principles are paramount here, so pack out everything you pack in, including trash. Also, be mindful of 'uphill hikers' – they generally have the right of way on trails. And if you encounter wildlife, always maintain a safe distance and never feed them; these are wild animals, and respecting their space is crucial for both your safety and theirs.
What is the cheapest month to visit Colorado, USA?
The cheapest months to visit Colorado, USA are typically Jan and Feb during the off-season. You can save 30-40% on hotels and flights compared to peak summer months. While weather may not be ideal, you'll enjoy fewer crowds and significant savings.
How many days do you need in Colorado, USA?
We recommend spending 3-5 days in Colorado, USA to see the main attractions without feeling rushed. This gives you time to explore the top sights, experience local culture, and take a day trip if desired. Budget travelers might do 2-3 days, while those wanting a deeper experience should plan for a week.
What should I avoid in Colorado, USA?
Avoid visiting Colorado, USA during Jan if possible, when weather conditions are less favorable. Also, be cautious of tourist traps in heavily visited areas - research attractions beforehand and consider booking skip-the-line tickets for popular sites.
Is Colorado, USA expensive to visit?
Colorado, USA can be enjoyed on various budgets. Daily costs typically range from $50-80 for budget travelers, $100-200 for mid-range visitors, and $250+ for luxury experiences. Prices are highest during May and lowest during off-season months. Book accommodations early to secure better rates.
What is Colorado, USA famous for?
Colorado, USA is famous for its unique attractions, rich culture, and memorable experiences. The destination is best known for its architectural landmarks, local cuisine, and vibrant atmosphere. Visit during May or Jun for the best experience.
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