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✓ Updated January 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 a truly tranquil Colorado experience, aim for late September through October, when the aspen trees ignite the mountainsides in a breathtaking display of gold and crimson. Imagine crisp, cool air carrying the scent of pine as you witness golden sunsets paint the peaks. Alternatively, June offers a vibrant awakening, with wildflowers carpeting meadows and the promise of long, sun-drenched days perfect for exploring hiking trails before the summer crowds arrive. The winter months, from December to February, transform the state into a serene, snow-covered wonderland, ideal for quiet contemplation by a crackling fire after a day of peaceful skiing.

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 majestic Rocky Mountains as the first rays of sun paint the peaks in hues of orange and pink. This is an unparalleled way to witness Colorado's grandeur, offering a perspective few ever experience. Bundle up, as mornings can be chilly, but the visual reward is immense.

Explore the Artistic Enclave of Manitou Springs

Wander through the charming streets of this Victorian-era town, known for its natural mineral springs and vibrant arts scene. Sample the unique flavors of the various spring waters, browse independent galleries showcasing local talent, and discover quirky shops tucked away on side streets. It's a delightful escape from the more crowded mountain towns.

Hike the Maroon Bells in Autumn's Glory

Witness the iconic Maroon Bells, two towering peaks reflected in a pristine alpine lake, surrounded by a kaleidoscope of golden aspen trees. Access is restricted during peak season, so plan to take the shuttle bus from Aspen. The crisp autumn air and vibrant foliage create a truly magical spectacle.

Dine at a Denver Food Hall

Immerse yourself in Denver's burgeoning culinary scene by exploring one of its lively food halls, such as Avanti or Denver Central Market. Sample a diverse array of local flavors, from gourmet tacos to artisanal ice cream, all under one roof. It's a fantastic way to taste the city's diverse offerings in a casual, buzzing atmosphere.

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 layers as the day warms up or add them if you head to the mountains.

money

Embrace happy hour for dining deals, especially in Denver and mountain towns. Many restaurants offer discounted appetizers and drinks from around 3-6 PM, which can significantly cut down on your food budget. Look for places advertising 'Apres-Ski' specials in winter or 'Mountain Town Happy Hour' year-round.

transport

If you're visiting Denver, consider using ride-sharing services or the RTD light rail to get around downtown and to the airport, as parking can be expensive and difficult. For exploring the Rockies, a rental car is essential, but book it well in advance, especially during peak ski or summer hiking seasons.

safety

Altitude sickness is real, so take it easy your first day or two at higher elevations (like Denver, which is a mile high, or even higher mountain towns). Drink plenty of water, avoid alcohol initially, and don't overexert yourself. If you feel unwell, descend to a lower elevation if possible.

culture

Tipping is customary here, just like in most of the US. Factor in 15-20% for restaurant servers, bartenders, and tour guides. It's a significant part of their income, so good service deserves good compensation.

food

Don't leave Colorado without trying some green chili! It's a hearty stew, often pork-based, with roasted green chilies and a rich broth, and it's a staple comfort food. You'll find it on menus everywhere from diners to upscale restaurants, often served with tortillas or over burritos.

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

Weather Details

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

Monthly Weather Data Table

MonthHigh (°C)Low (°C)High (°F)Low (°F)Rainfall (mm)Rain DaysDaylight (h)
Jan-1°C-13°C30°F9°F15mm
5 days
9.7h
Feb2°C-10°C36°F14°F18mm
5 days
10.7h
Mar7°C-5°C45°F23°F28mm
7 days
12h
Apr13°C0°C55°F32°F33mm
7 days
13.5h
May18°C5°C64°F41°F51mm
9 days
14.5h
Jun24°C9°C75°F48°F46mm
8 days
15.2h
Jul27°C12°C81°F54°F51mm
8 days
15.1h
Aug26°C11°C79°F52°F43mm
7 days
14.3h
Sep21°C6°C70°F43°F30mm
6 days
13h
Oct14°C0°C57°F32°F25mm
5 days
11.7h
Nov6°C-6°C43°F21°F20mm
5 days
10.3h
Dec-1°C-12°C30°F10°F15mm
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

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

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

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

Mar in Colorado, USA

Weather

7°C°C / 45°F°F

7 days rainy days • 28mmmm

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

7 days rainy days • 33mmmm

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

9 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

8 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

8 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

7 days rainy days • 43mmmm

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

6 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 • 25mmmm

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

5 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

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

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

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 majestic Rocky Mountains as the first rays of sun paint the peaks in hues of orange and pink. This is an unparalleled way to witness Colorado's grandeur, offering a perspective few ever experience. Bundle up, as mornings can be chilly, but the visual reward is immense.

Best time: Sep-Mar

Explore the Artistic Enclave of Manitou Springs

cultural

Wander through the charming streets of this Victorian-era town, known for its natural mineral springs and vibrant arts scene. Sample the unique flavors of the various spring waters, browse independent galleries showcasing local talent, and discover quirky shops tucked away on side streets. It's a delightful escape from the more crowded mountain towns.

Hike the Maroon Bells in Autumn's Glory

nature

Witness the iconic Maroon Bells, two towering peaks reflected in a pristine alpine lake, surrounded by a kaleidoscope of golden aspen trees. Access is restricted during peak season, so plan to take the shuttle bus from Aspen. The crisp autumn air and vibrant foliage create a truly magical spectacle.

Best time: Late Sep-Early Oct

Dine at a Denver Food Hall

food

Immerse yourself in Denver's burgeoning culinary scene by exploring one of its lively food halls, such as Avanti or Denver Central Market. Sample a diverse array of local flavors, from gourmet tacos to artisanal ice cream, all under one roof. It's a fantastic way to taste the city's diverse offerings in a casual, buzzing atmosphere.

Discover the Dinosaur Ridge Trail

attraction

Step back in time at Dinosaur Ridge, where you can walk among real dinosaur footprints preserved in ancient rock. The interpretive trail offers fascinating insights into prehistoric life in Colorado. Wear sturdy shoes and bring plenty of water, especially during the warmer months.

Stargazing in Great Sand Dunes National Park

nature

Experience the awe of one of the darkest night skies in the continental United States at Great Sand Dunes National Park. The vastness of the dunes under a blanket of stars is an unforgettable, almost spiritual experience. Consider a night hike or even camping for the full immersion.

Best time: May-Oct

Browse the Boutiques of Larimer Square

shopping

Stroll through Denver's historic Larimer Square, a beautifully preserved Victorian block now brimming with independent boutiques, innovative restaurants, and lively bars. In the evening, the square is illuminated by strings of lights, creating a romantic and vibrant atmosphere perfect for a night out.

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GoWithGuide Tours and Experiences

Getting Around Colorado, USA

Rental Car (with 4WD/AWD recommended)

For exploring the vast landscapes and mountain towns of Colorado, a rental car is often the most flexible option. Opting for a 4WD or AWD vehicle is highly recommended, especially outside of summer, to navigate snowy or unpaved mountain roads safely.

Cost:Varies widely, typically $50-$150+ per day depending on vehicle type and rental duration. Factor in gas costs and potential for higher insurance premiums.
Tip:Book your rental car well in advance, especially if you need a 4WD/AWD vehicle, as they are in high demand. Download offline maps (Google Maps, Maps.me) as cell service can be spotty in mountainous areas. A common mistake is underestimating driving times between destinations; always add buffer time for scenic stops and potential weather delays. Be aware of 'chain laws' during winter months, which may require you to carry or install snow chains on your tires.

Amtrak's California Zephyr

This iconic train route cuts through the heart of the Rockies, offering breathtaking views between Denver and Grand Junction. It's a relaxed way to see the dramatic scenery without the stress of driving, perfect for those who want to enjoy the journey.

Cost:Fares start around $50-$100 one-way, but can increase significantly based on booking time and class of service. Consider a Rail Pass for multi-city travel.
Tip:Book tickets as far in advance as possible for the best prices and availability, especially for sleeper accommodations. Sit on the left side of the train traveling west from Denver for the most spectacular views of the canyons. Be patient; trains can experience delays due to freight traffic on the tracks. Pack snacks and drinks, as onboard dining can be pricey.

Bustang (Colorado's State-Run Bus Service)

Bustang connects major cities and towns across Colorado, including popular ski resorts during the winter season. It's a budget-friendly and eco-conscious alternative to driving, offering routes like the 'Snowstang' directly to ski areas.

Cost:Fares are generally affordable, ranging from $10-$30 for most routes. Check the Bustang website for specific route pricing and schedules.
Tip:Purchase tickets online in advance via the Bustang website or app. Download the Bustang app for real-time tracking and booking. Common mistake: assuming buses run frequently to smaller towns; check schedules carefully, as some routes are limited. Boarding etiquette is similar to other bus services; be mindful of personal space and keep aisles clear.

Ride-Sharing Services (Uber/Lyft)

Available in major metropolitan areas like Denver and Boulder, ride-sharing services are convenient for getting around within cities or to nearby attractions. Availability can be limited in more remote or mountainous regions.

Cost:Varies by distance and demand, typically starting at $10-$20 for short trips within a city. Surge pricing can significantly increase costs during peak hours.
Tip:Download the Uber or Lyft app before you arrive. Be aware that wait times can be longer in less populated areas. A common pitfall is expecting these services to be readily available in mountain towns or national parks; plan accordingly and consider alternative transport for those areas. Confirm your driver and vehicle details before getting in.

Local Airport Shuttles & Private Transfers

For direct transport from Denver International Airport (DIA) to popular destinations like ski resorts or mountain towns, dedicated shuttle services are a great option. These can be more convenient than renting a car if your primary goal is resort-based activities.

Cost:Can range from $50-$150+ per person one-way, depending on the destination and service provider. Private transfers are significantly more expensive.
Tip:Book shuttle services well in advance, especially during peak ski season. Popular providers include Colorado Mountain Express (CME) and Epic Mountain Express. Avoid the mistake of waiting until you land to book; popular shuttles fill up quickly. Confirm pickup locations and times carefully, as they can vary.

💡 Travel Tip: This season usually means better deals — check what's available on Trip.com.

Similar Destinations

Frequently Asked Questions

When is the absolute best time to visit Colorado if I want to experience both stunning fall colors and avoid the biggest crowds?

For that perfect sweet spot, aim for mid-to-late September. The aspen trees typically peak in vibrant gold across the state during this period, offering breathtaking scenery without the peak summer tourist rush or the early winter snow. Plus, the weather is usually crisp and pleasant for hiking before the chill truly sets in.

I'm planning a road trip through the Rockies. What's the deal with driving in the mountains, especially in winter?

Colorado's mountain roads are generally well-maintained, but winter driving requires serious respect. Always check the Colorado Department of Transportation (CDOT) website for real-time road conditions and closures before you set out – they're incredibly reliable. If you're visiting between November and April, make sure your vehicle has good tires, and consider carrying chains, as they can be mandatory on certain passes during severe weather.

Beyond Denver and Aspen, what's a truly unique Colorado experience that most tourists miss?

You absolutely must explore the San Luis Valley in southern Colorado. It's a vast, high-altitude desert with a mystical feel, home to the Great Sand Dunes National Park and Preserve, where you can sandboard down massive dunes. The valley also boasts quirky towns like Crestone, known for its spiritual retreats and stunning views of the Sangre de Cristo Mountains.

I've heard about 'altitude sickness.' How serious is it, and what's the best way to prepare?

Altitude sickness is definitely real, and it can affect anyone, regardless of fitness level. The best advice I can give is to take it easy your first day or two – hydrate constantly with water (skip the alcohol and caffeine initially), eat light meals, and avoid strenuous activity. Many visitors find that spending a night in a lower-elevation town like Denver before heading up to mountain destinations like Breckenridge or Vail really helps them acclimatize.

Are there any local customs or etiquette I should be aware of, especially when visiting smaller mountain towns?

Mountain towns often have a more laid-back, friendly vibe, so don't be surprised if locals strike up conversations or offer directions readily. A simple 'hello' goes a long way! Also, be mindful of 'Leave No Trace' principles when hiking; pack out everything you pack in, stay on marked trails, and respect wildlife from a distance – these are cherished values in Colorado's natural landscapes.

What's the best way to experience Colorado's famous craft beer scene without just hitting the most crowded breweries?

While Denver has a fantastic brewery concentration, consider exploring smaller towns like Fort Collins or Boulder, which have vibrant craft beer cultures with fewer crowds. Many breweries in these areas are located in charming downtown districts, making for a pleasant afternoon of tasting and exploring. Look for breweries that focus on local ingredients or unique styles – that's where you'll find the real gems.

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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