January

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January and February in Boulder are crisp and wintry, with snow-covered trails and frosty mornings. Though it’s cold, the city enjoys abundant sunshine, giving winter days a brightness that softens the chill. It’s a quieter time—perfect for peaceful hikes with micro spikes, local coffee shops, and quick access to nearby ski slopes. However, weather can be unpredictable, and some outdoor activities are limited by ice and snow.

Specific Events:

• Fiske Planetarium  (ongoing) – A great mix of shows—from immersive full dome films and live talks to laser light shows set to music. It’s also a go-to spot for stargazing events and anything big happening with NASA.
• New Years Fitness Jam (Jan 11, 2026) – A fitness event to kick off the new year
• Versitality Dance Festival – showcases emerging and established dance companies and filmmakers. 

February

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Boulder in February can be cold and sunny. There are still many spirited events and activities to be had, mostly indoors.

Specific Events:

• NCAR(ongoing) – NCAR, the National Center for Atmospheric Research, is a world-renowned hub for climate and weather science located in the foothills of Boulder, and it’s a great place to visit for its interactive exhibits, stunning architecture by I.M. Pei, and scenic trails with panoramic views of the Rockies.
• Ski at Eldora Mountain Resort (2026-2027) – Eldora Ski Resort is less than an hour from Boulder, making it the perfect place for a weekend ski getaway.

March

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March brings a wild mix of seasons. One day might feel like spring, and the next could drop fresh snow. We love this. This transitional month holds the energy of change—muddy trails begin to dry, and the longer daylight hints at what’s to come. Outdoor plans require flexibility, but it’s an exciting time to catch the shift from winter to spring. Saint Patricks events and the season changing blooms are celebrated in style.

Specific Events:

• St Patrick’s Day Bar Crawl – Grab your friends and your best green shirt and bar hop!
• World’s Shortest St. Patrick’s Day Parade – Celebrate with Celtic flair in one of the nation’s shortest parades.
• Boulder Ballet presents “Rebels and Innovators” at the Dairy Arts Center. 

April

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By April, the landscape begins to green, with blossoms appearing and the city shaking off the last of winter. While sudden spring storms are still possible, it’s increasingly comfortable to spend full days outside. Hiking, cycling, and rock climbing start to draw locals back into the hills, though occasional snow or rain can still surprise.

Specific Events:

• Conference on World Affairs  (April 13-16, 2026) – Attend free talks and panels on global issues at the University of Colorado.
• Boulder International Film Festival  (April 9-12, 2026) – Experience independent films and filmmaker discussions.
• BOCO International Flamenco Festival (April TBA): Immerse yourself in Spanish culture with performances and workshops.
• Bluebird Music Festival  (April, 2026)

May

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May is when Boulder fully comes alive. Trees are leafing out, wildflowers bloom along the trails, and patios buzz with conversation. It’s an ideal time for outdoor exploration, with lower elevation trails fully accessible and the high country slowly opening up. The main constraint is simply timing—afternoon storms and fast-changing conditions mean mornings are often best for adventure.

Specific Events:

• Boulder Bolder: Boulder Running Company’s Memorial Day 10k (Memorial day weekend) – Named “America’s All-Time Best 10K” by Runner’s World. Founded in 1979, it has grown to be one of the most acclaimed events in the world.
• Boulder Creek Festival (Memorial day weekend) – The festival includes a variety of activities, vendors, food, kid zone, and entertainment, including multiple performance stages with live music and dance. Festival is free.
• Boulder Startup Week (May 12-16): Engage with innovators and entrepreneurs at various events.

June

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June in Boulder is typically warm, dry and blanketed in endless blue skies. It’s the sweet spot between spring’s freshness and summer’s heat, perfect for long days on the trail, gardening, creekside lounging, and downtown events. Outdoor enthusiasts thrive this month, with few limitations other than watching for rising creek levels from snowmelt.

Specific Events:

• Boulder Shakespeare Festival (June- August)– For more than 60 years, the Colorado Shakespeare Festival has entertained audiences with performances of classic plays. It’s a professional theatre group connected to the University of Colorado Boulder. Since 1958, the festival has celebrated Shakespeare’s work and lasting impact through high-quality productions, education, and community events. Shows take place under the summer sky at the historic Mary Rippon Outdoor Theatre and indoors at the newly updated University Theatre.
• Band on the Brick (Wednesdays 5:30-9:00pm) – Free summer concerts on Pearl Street
• Chautauqua Summer Concert Series (all summer long)  – The series features a diverse range of genres and artists, from established icons to emerging talents, and is a highlight of Boulder’s summer cultural scene.

July 2026

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July and August are Boulder’s high summer—vibrant, hot, and full of motion. The city hums with energy: tubing down Boulder Creek, climbing in the Flatirons, and attending outdoor concerts or art festivals. Early mornings are golden, but heat and afternoon thunderstorms are common. Smoke from wildfires can be an occasional concern, especially later in summer.

Specific Events:

• Rosann Cash with John Levethal (July 20)– Head to Chautauqua auditorium for a night with Comedian Lewis Black.
• Boulder Fine Art Street Festival (July 17-19) – See the beautiful, eclectic, and unique styles from all over the country
• Family Lawn Fair (July 12)

August

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August in Boulder means school is back in session and there will be hot nights, big events, and chances to cheer for your favorite teams and artists. Hike the iconic Flatirons, go for a scenic bike ride, or enjoy a day at one of Boulder’s many parks or lakes. You can also check out summer events such as the Boulder County Farmers Market and various live music festivals. If you’re looking for a more relaxed experience, visit one of Boulder’s many craft breweries or indulge in fresh, locally sourced food at one of the town’s renowned restaurants.

Specific Events:

• Boulder County Farmers Market (ongoing) – A summer staple for fresh produce and goods
• Boulder Taco Festival (August 22) – Dive into mouthwatering tacos from the best local spots, sip on fresh margs & craft beer, and vibe out to live bands—all in a shady, creekside venue. But that’s not all… kick off the day with the Boulder 5K Taco Run, then brace yourself for high-flying Lucha Libre wrestling, smash some piñatas, and soak up the unbeatable party energy.
• Folks Festival in Golden (August 7-9) – Live music on multiples stages, family camping, great food and river floats.

September

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September might be the best month to be in Boulder. The heat softens, the air turns crisp, and the first hints of fall color touch the hillsides. It’s one of the most beloved months—ideal for hiking, trail running, and soaking up the last of summer’s energy without the crowds or stormy afternoons.

Specific Events:

• University of Colorado Football Game (ongoing)– Coach Prime continues to entertain and bring life into the buffaloes.
• Bee Boulder Festival (Sept 19): 10 a.m. – 2 p.m. in Central Park (near the Farmers Market), featuring nature education, kids’ activities, and live music.
• Boulder Sky Lantern Festival (Sept 19): A high-end experience at the University of Colorado Boulder
• Boulder Farmers Market – Early fall harvest delights
• Boulderthon (Sept 28): Boulder’s major annual marathon and running event.
• Pearl Street Stampedes: Occurring late August through November, these parades feature marching bands and CU spirit.
• Cottonwood Farms Pumpkin Patch: Opens late September (usually around Sept 24), offering corn mazes, hayrides, and pumpkins near Lafayette.

October

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October is cool, bright, and quietly beautiful. The aspens in nearby canyons turn gold, and the weather is perfect for long walks, climbing sessions, and weekend farmers markets.

Specific Events:

• Oktoberfest Boulder (October 1-2)- Beer, food, and fun in downtown Boulder
• Boulder Munchkin Masquerade, Halloween Parade (October 31) – A spooky and fun family event
• Downtown Boulder Fall Fest (Oct 3-5, 2026): A popular weekend event featuring local food, beer, and music.
• Community Harvest Festival (Oct 7, 2026): Held at Growing Gardens.
• Indigenous Peoples Day Events (Oct 12-14, 2026): Scheduled in downtown Boulder.
• World Singing Day (Oct 17, 2026): A community sing-along on Pearl Street.
• Halloween Drive-In Movies (Oct 17 & 24, 2026): Showing Hotel Transylvania and The Goonies.
• Tamale Fair / Feria del Tamal (Oct 24, 2026): Located at the Boulder County Fairgrounds.
• Boulder Jewish Film Festival (Oct 25 – Nov 1, 2026): Featuring intimate screenings.

November 2025

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November begins the slide into winter. Some days feel like late fall, while others hint at snow-covered weeks ahead. It’s a contemplative time, good for cozy cafes, indoor galleries, and peaceful walks through the changing landscape. Outdoor adventure becomes more weather-dependent, and the mountains begin to collect snow.

Specific Events:

• Boulder Holiday Market – Kick off the holiday season with local artisan gifts
• University of Colorado Basketball Game (November, TBA) – Mens Basketball
• Chamber Orchestra Performances (ongoing)- Enjoy holiday-themed live performances
• Light up Boulder (Nov 23-Jan)- Witness the city light up for the holidays

December 2025

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December in Boulder is filled with holiday cheer. The streets light up with festive displays, and the city hosts a variety of holiday events, from holiday markets to parades. For outdoor enthusiasts, winter activities like skiing, snowboarding, and ice skating are in full swing. The chilly temperatures and snowy landscapes make Boulder a magical winter destination, with plenty of opportunities to create unforgettable holiday memories.

Specific Events:

Ice Skating at the Boulder Ice Rink – Perfect for a family outing

• Ice Skating at the Boulder Ice Rink – Perfect for a family outing
• Boulder Winter Market – Shop for seasonal goods and local treasures
• Light up Boulder (Nov 23-Jan)- Witness the city light up for the holidays