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✓ Updated February 2026

Weather data and travel information verified current

Best Time to Visit Colorado, USA: May or Jun 2026

Colorado, USA travel destination - scenic view of Sunrise Hot Air Balloon over the Rockies during ideal visiting season
Image: Flag of Colorado.svg viaWikimedia Commons

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Quick Answer:

For an elegant embrace of Colorado's splendor, aim for late June through September, when the Rocky Mountains are at their most vibrant. Imagine crisp mountain air carrying the scent of pine as you hike through wildflower-strewn meadows under vast, cerulean skies, or witness the breathtaking spectacle of golden sunsets painting the peaks. Alternatively, the winter months, from December to March, offer a different kind of elegance, with powdery snow blanketing the landscape, inviting you to carve down pristine slopes or cozy up by a crackling fire.

Best Months to Visit:

MayJunJulAugSep

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 snow-dusted peaks of the Rocky Mountains as the first rays of sun paint the landscape in hues of pink and gold. This breathtaking perspective offers unparalleled views of the majestic ranges and is an unforgettable way to start your day in Colorado.

Explore the Art Scene in RiNo, Denver

Wander through Denver's River North Art District (RiNo) and discover a vibrant outdoor gallery of massive, colorful murals adorning brick buildings. Beyond the street art, pop into independent galleries and studios to meet local artists and perhaps find a unique piece to take home.

Hike to the Emerald Lake in Rocky Mountain National Park

Embark on a moderate hike through alpine meadows and past cascading waterfalls to reach the stunning Emerald Lake, nestled beneath towering granite cliffs. The reflection of the surrounding peaks on the crystal-clear water is a postcard-perfect scene, especially vibrant in late spring when wildflowers bloom.

Savor Craft Brews in Fort Collins

Discover why Fort Collins is a mecca for craft beer enthusiasts by touring one of its many renowned breweries. Enjoy a tasting flight and learn about the innovative brewing processes that have earned this city national acclaim, often accompanied by live music and local food trucks.

See all 7 things to do →

💡 Travel Tip: For the best value on hotels during this season, check current rates on Trip.com.

Essential Travel Tips

packing

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 outer shell – you can shed or add as the day warms up or cools down, or if you encounter a sudden mountain shower.

safety

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 until you're acclimated. If you're planning hikes above 8,000 feet, consider bringing Diamox or consulting your doctor beforehand.

transport

Renting a car is almost essential for exploring Colorado's vast landscapes, but be prepared for mountain driving. Download offline maps on Google Maps or Maps.me, as cell service can be spotty in national parks and rural areas. If visiting in winter, always check road conditions on COTrip.org before setting out, and ensure your rental has 4WD or AWD if you're heading into the mountains.

money

Many mountain towns have a 'local's discount' or happy hour deals that can save you a bundle on food and drinks. Look for signs outside restaurants or ask your server – you might snag a great burger and beer for under $20. Also, consider packing lunches for hikes; buying snacks in touristy areas can add up quickly.

culture

Colorado is a very outdoorsy state, so embrace the casual vibe! You'll see people in hiking gear everywhere, even at nice restaurants in towns like Aspen or Vail. Don't be afraid to strike up conversations with locals at breweries or trailheads; they're usually happy to share their favorite spots or hidden gems.

food

Don't leave Colorado without trying some green chili – it's a regional specialty and every diner or restaurant has their own version. Whether it's a hearty stew or a spicy sauce served over burritos, it's the perfect comfort food after a day of exploring. Look for places advertising 'authentic' Colorado green chili for the best experience.

💡 Travel Tip: If you're planning your trip, it's worth checking flight prices on Trip.com before you decide.

Weather Details

Jan
4 days
Feb
4 days
Mar
5 days
Apr
6 days
May
8 days
Jun
7 days
Jul
7 days
Aug
6 days
Sep
5 days
Oct
5 days
Nov
4 days
Dec
4 days

Monthly Weather Data Table

MonthHigh (°C)Low (°C)High (°F)Low (°F)Rainfall (mm)Rain DaysDaylight (h)
Jan-1°C-14°C30°F7°F15mm
4 days
9.7h
Feb2°C-11°C36°F12°F18mm
4 days
10.7h
Mar7°C-6°C45°F21°F25mm
5 days
12h
Apr13°C0°C55°F32°F30mm
6 days
13.4h
May18°C5°C64°F41°F51mm
8 days
14.4h
Jun24°C9°C75°F48°F46mm
7 days
15h
Jul27°C12°C81°F54°F51mm
7 days
14.8h
Aug26°C12°C79°F54°F48mm
6 days
13.8h
Sep21°C7°C70°F45°F30mm
5 days
12.5h
Oct14°C1°C57°F34°F23mm
5 days
11.2h
Nov6°C-7°C43°F19°F18mm
4 days
10.1h
Dec-1°C-13°C30°F9°F15mm
4 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

4 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

Quick Tip: Jan is cooler. Pack warm clothing and layers.

Feb in Colorado, USA

Weather

2°C°C / 36°F°F

4 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

Quick Tip: Feb is cooler. Pack warm clothing and layers.

Mar in Colorado, USA

Weather

7°C°C / 45°F°F

5 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

Quick Tip: Mar is cooler. Pack warm clothing and layers.

Apr in Colorado, USA

Weather

13°C°C / 55°F°F

6 days rainy days • 30mmmm

What to Expect

Spring in full bloom. Pleasant temperatures and growing tourist activity.

Crowd Level

🟡 Moderate - Comfortable crowds, good availability

Quick Tip: Apr offers a quieter experience with fewer tourists.

May in Colorado, USA

⭐ Best Time

Weather

18°C°C / 64°F°F

8 days rainy days • 51mmmm

What to Expect

Late spring, excellent weather. One of the best times to visit for most travelers.

Crowd Level

🟡 Moderate - Comfortable crowds, good availability

Quick Tip: May is one of the best times to visit with ideal weather conditions.

Jun in Colorado, USA

⭐ Best Time

Weather

24°C°C / 75°F°F

7 days rainy days • 46mmmm

What to Expect

Early summer, warm and sunny. Peak season begins, book accommodations early.

Crowd Level

🔴 High - Peak tourist season, book early

Quick Tip: Jun is one of the best times to visit with ideal weather conditions.

Jul in Colorado, USA

⭐ Best Time

Weather

27°C°C / 81°F°F

7 days rainy days • 51mmmm

What to Expect

Peak summer season. Hot weather and highest tourist crowds. Most expensive time.

Crowd Level

🔴 High - Peak tourist season, book early

Quick Tip: Jul is one of the best times to visit with ideal weather conditions.

Aug in Colorado, USA

⭐ Best Time

Weather

26°C°C / 79°F°F

6 days rainy days • 48mmmm

What to Expect

Peak summer continues. Very crowded but great weather for outdoor activities.

Crowd Level

🔴 High - Peak tourist season, book early

Quick Tip: Aug is one of the best times to visit with ideal weather conditions.

Sep in Colorado, USA

⭐ Best Time

Weather

21°C°C / 70°F°F

5 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

Quick Tip: Sep is one of the best times to visit with ideal weather conditions.

Oct in Colorado, USA

Weather

14°C°C / 57°F°F

5 days rainy days • 23mmmm

What to Expect

Fall season, mild temperatures. Lower crowds and good prices. Comfortable for sightseeing.

Crowd Level

🟡 Moderate - Comfortable crowds, good availability

Quick Tip: Oct offers a quieter experience with fewer tourists.

Nov in Colorado, USA

Weather

6°C°C / 43°F°F

4 days rainy days • 18mmmm

What to Expect

Late fall, cooler weather. Off-season begins, significant discounts available.

Crowd Level

🟢 Low - Quiet season, easy to find accommodation

Quick Tip: Nov is cooler. Pack warm clothing and layers.

Dec in Colorado, USA

Weather

-1°C°C / 30°F°F

4 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

Quick Tip: Dec is cooler. Pack warm clothing and layers.

All Things to Do in Colorado, USA

Sunrise Hot Air Balloon over the Rockies

activity

Drift silently above the snow-dusted peaks of the Rocky Mountains as the first rays of sun paint the landscape in hues of pink and gold. This breathtaking perspective offers unparalleled views of the majestic ranges and is an unforgettable way to start your day in Colorado.

Best time: Sep-Mar

Explore the Art Scene in RiNo, Denver

cultural

Wander through Denver's River North Art District (RiNo) and discover a vibrant outdoor gallery of massive, colorful murals adorning brick buildings. Beyond the street art, pop into independent galleries and studios to meet local artists and perhaps find a unique piece to take home.

Hike to the Emerald Lake in Rocky Mountain National Park

nature

Embark on a moderate hike through alpine meadows and past cascading waterfalls to reach the stunning Emerald Lake, nestled beneath towering granite cliffs. The reflection of the surrounding peaks on the crystal-clear water is a postcard-perfect scene, especially vibrant in late spring when wildflowers bloom.

Best time: Jun-Oct

Savor Craft Brews in Fort Collins

food

Discover why Fort Collins is a mecca for craft beer enthusiasts by touring one of its many renowned breweries. Enjoy a tasting flight and learn about the innovative brewing processes that have earned this city national acclaim, often accompanied by live music and local food trucks.

Journey through the Garden of the Gods

attraction

Marvel at the towering, crimson sandstone formations of Garden of the Gods Park, sculpted by millions of years of erosion. Take a leisurely stroll or a more challenging hike among these natural wonders, keeping an eye out for bighorn sheep and enjoying the dramatic contrast of the red rocks against the blue Colorado sky.

Discover the Magic of the Great Sand Dunes

activity

Experience the surreal landscape of North America's tallest sand dunes, a stark contrast to the surrounding mountains. Try sandboarding or sledding down the massive dunes for an exhilarating adventure, and stay after sunset for incredible stargazing in this designated International Dark Sky Park.

Best time: May-Oct

Browse the Unique Boutiques in Telluride

shopping

Stroll down the charming main street of Telluride, a historic Victorian mining town nestled in a box canyon, and explore its eclectic mix of independent boutiques. You'll find everything from high-end outdoor gear and artisan jewelry to local art and cozy cafes, perfect for a leisurely afternoon of browsing.

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GoWithGuide Tours and Experiences

Getting Around Colorado, USA

Rental Car (with 4WD/AWD recommended)

For exploring the vast landscapes of Colorado, from Rocky Mountain National Park to the San Juan Mountains, a rental car is often essential. Opting for a 4WD or AWD vehicle is highly recommended, especially outside of summer, to handle unpredictable mountain weather and unpaved roads.

Cost:$50-$150+ per day, depending on vehicle type and season. Factor in gas and potential ski rack rentals.
Tip:Book well in advance, especially for peak seasons (summer and ski season). Download offline maps (Google Maps, Maps.me) as cell service can be spotty in mountainous areas. Be aware of 'chain laws' during winter – you may be required to use snow chains on your tires on certain mountain passes, even with 4WD/AWD. Don't underestimate driving times; mountain roads are slower than they appear.

Bustang (Intercity Bus Service)

Bustang offers a comfortable and affordable way to travel between major Colorado cities and towns, including Denver, Boulder, Fort Collins, Colorado Springs, and mountain resort towns like Vail and Glenwood Springs. It's a great alternative to driving, especially if you want to relax and enjoy the scenery.

Cost:$15-$40 per one-way trip, depending on the route. Look for discounted multi-ride passes.
Tip:Book tickets online via the Bustang website or app. The 'Colorado' bus is the most comprehensive route. Be punctual for boarding, as buses adhere to schedules strictly. Some routes offer Wi-Fi and power outlets, making it a productive travel option.

RTD Denver (Regional Transportation District)

If you're staying primarily in the Denver metro area, RTD's light rail and bus system is your best bet. It connects Denver International Airport (DIA) to downtown, major attractions, and surrounding suburbs.

Cost:$3.00 for a 3-hour pass, $6.00 for a day pass. A 'MyRide' card can offer savings for frequent riders.
Tip:Download the 'Transit' app for real-time schedules and trip planning. Be aware that light rail service can be less frequent on weekends and late at night. Avoid leaving valuables unattended, especially on crowded buses or trains.

Amtrak (California Zephyr Route)

While not extensive within Colorado, the Amtrak California Zephyr route offers a scenic rail journey through the heart of the Rockies, connecting Denver to Grand Junction and beyond. It's a unique way to experience the dramatic mountain landscapes without the stress of driving.

Cost:Varies significantly by booking time and class of service, from $50 to several hundred dollars for a one-way ticket.
Tip:Book tickets as far in advance as possible for the best prices. Consider a sleeper car for overnight journeys. Be prepared for potential delays, as Amtrak routes can be subject to freight train traffic. Enjoy the observation car for unparalleled views.

Ride-Sharing Services (Uber/Lyft)

Available in most urban areas like Denver, Boulder, and Colorado Springs, ride-sharing services are convenient for short trips within cities or getting to/from the airport. They are generally not a practical or cost-effective option for inter-city travel or reaching remote mountain destinations.

Cost:Variable, typically $10-$30 for short city trips. Surge pricing can significantly increase costs during peak hours.
Tip:Check availability before you need a ride, as service can be limited in less populated areas. Be patient during busy times. Understand that drivers may not be familiar with mountain roads or specific local attractions outside of major cities.

Ski Resort Shuttles

Many major ski resorts offer their own shuttle services, often connecting to nearby towns or even Denver International Airport. These are invaluable if your primary destination is a ski resort and you don't want to deal with winter driving.

Cost:Can range from free (for resort guests) to $50-$100+ for airport transfers. Check individual resort websites for details.
Tip:Book these shuttles well in advance, as they often fill up quickly, especially during holidays. Confirm pick-up locations and times meticulously. If relying on a shuttle to get back to the airport, build in ample buffer time for potential weather delays.

💡 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 for a mix of outdoor activities and fewer crowds?

For that sweet spot, aim for late September into October. The aspen trees put on a spectacular show with their golden leaves, and you can still enjoy hiking and biking before the heavy snow arrives. Plus, the summer crowds have thinned out, making popular spots like Rocky Mountain National Park feel much more serene.

I'm planning a road trip through Colorado. What's a scenic route that most tourists miss?

Skip the interstate for a bit and try the Peak to Peak Scenic Byway, especially between Estes Park and Black Hawk. It winds through charming mountain towns and offers breathtaking views of the Continental Divide, often with far fewer cars than the more famous routes. Just be sure to check road conditions, especially outside of summer.

What's the deal with altitude sickness in Colorado, and how can I prepare?

Altitude sickness is real, so take it easy your first day or two, especially if you're coming from sea level. Drink way more water than you think you need, avoid alcohol and heavy meals initially, and consider over-the-counter remedies like ibuprofen. Many Coloradans swear by eating a hearty meal of pasta the night before heading to higher elevations – it can't hurt!

Beyond Denver and Aspen, what's a charming, less-touristy mountain town worth exploring?

You should definitely check out Salida. It's a vibrant arts community nestled along the Arkansas River, offering fantastic rafting, hiking, and a surprisingly sophisticated culinary scene for its size. The historic downtown is a delight to wander, and it feels much more like a lived-in Colorado town than a pure tourist destination.

Are there any local customs or etiquette I should be aware of when visiting Colorado's mountain communities?

Respect the 'leave no trace' principle religiously; it's a big deal here. Also, be prepared for casual dress codes even in nicer restaurants – think hiking boots and fleece are perfectly acceptable. And don't be surprised if locals are incredibly friendly and chatty on trails; it's part of the Colorado charm!

I want to experience Colorado's natural beauty without the intense crowds. Any insider tips?

Head to the San Juan Mountains in southwestern Colorado, particularly around Telluride or Ouray, but explore the less-trafficked forest service roads. While the main towns can be busy, venturing just a few miles out on a well-maintained dirt road can lead you to stunning, secluded alpine lakes and meadows. Always carry a good map and be aware of your vehicle's capabilities.

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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