Best Times to Visit Boulder, Colorado
With a famously mild climate and plenty to do in every season, there really isn’t a bad time to visit Boulder, Colorado. Winters see a generous amount of snowfall, which is great for powder seekers planning a skiing vacation on the nearby slopes. Summers are warm and dry, providing ideal conditions for hiking, biking, and various sporty activities. During spring and fall, the weather can be unpredictable, but accommodations are often more affordable. Festivals and events fill the calendar year-round, offering fun for foodies, music lovers, art enthusiasts, and culture fans. Whenever you decide to visit, you’ll find something to do in this laid-back, mountain-nestled city.
Come from January to March to Ski in a Winter Wonderland
The temperature in Boulder drops by December, bringing lots of snowfall along with cold temperatures. For locals and tourists alike, that means it’s time to hit the slopes. Boulder is only 35 minutes away from the beloved, local, and laid-back Eldora Ski Resort. After a day in knee-deep powder, head back into town to warm up with a cozy drink and a hot meal.
Few ski buffs come to Boulder before the holiday season, but by New Year, the peak winter tourist season is in full effect. During this time, expect a rise in accommodation prices and long lines for ski lifts at nearby resorts.
Summer is Peak Season for Outdoor Activities, Events, and Festivals
Boulder can get hot in the summer – up to 100°F (38°C) during the day – but it’s a dry heat, and short late-afternoon showers help make temperatures more bearable. Locals take full advantage of the favorable weather for outdoor activities, and the city hosts a string of outdoor events throughout this season, from music fairs to art, beer, and Shakespeare festivals. However, this is the busiest time for tourism in Boulder, so anticipate a crowd and higher accommodation prices.
September to November is the Best Time for Outdoor Adventures
Fall is absolutely stunning in Boulder, as Colorado’s aspen forests transform from green to a blazing, golden yellow. Moreover, temperatures hover between 60°F (15°C) and 70°F (21°C), creating perfect conditions for outdoor adventures such as mountain biking, rock climbing, fishing, hiking, and trail running. Boulder boasts an extensive trail network, making it easy to find a different activity for every day of your trip. However, be aware that sporadic snowfall can occur as early as late September, so bring warm clothing just in case.
Visit in Spring (April–May) to Avoid the Crowds and Save on Accommodations
Boulder’s spring weather is often unpredictable, with snow, downpours, and clear blue skies all part of the mix. This tends to deter tourists, resulting in typically lower accommodation prices. Nonetheless, those who venture out in spring will be rewarded with lush, green trails, blooming wildflowers, and one-of-a-kind experiences.
Monthly Highlights in Boulder
January
The first few weeks after New Year are popular for ski trips, attracting crowds to Boulder. Nearby ski resorts bustle until Martin Luther King Jr. Day, and a festive energy lingers downtown. The Flatirons are often dusted with fresh layers of snow, offering beautiful winter hiking and picturesque backdrops for winter activities.
Key Events: Polar Plunge, Boulder Philharmonic
February
Boulder is typically covered in snow during February, and temperatures can drop. However, don’t let the cold discourage you; there’s plenty of sunshine in February, and the sparkling, snow-covered mountains are a sight to behold. Although events are few this month, it’s an excellent time to enjoy a quieter Pearl Street or grab a beer at one of Boulder’s many craft breweries.
Key Events: Winter Craft Beer Festival
March
March is one of the best times for skiing in Colorado, with fresh powder regularly falling on nearby slopes. However, significant numbers of spring breakers also visit, causing accommodation prices to rise. Despite the crowds, it’s a beautiful time to experience Boulder, and several major arts events are hosted throughout the month.
Key Events: Boulder International Film Festival, Boulder Arts Week
April
Late spring brings unpredictable weather to Boulder. While most tourists avoid this time of year, it can be a good opportunity to find accommodation deals. The renowned Boulder County Farmers Market starts in April, drawing crowds with a delicious spread of local produce.
Key Events: Tulip Fairy & Elf Celebration, Bluebird Music Festival
May
As the last winter snow melts and spring sunshine prevails, lush greenery and wildflowers emerge all over Boulder. It’s perfect for biking or hiking, with over 150 miles (241 km) of scenic trails to explore.
Key Events: BolderBoulder 10k Road Race, Boulder Startup Week, Boulder Creek Festival
June
When June arrives, Boulder’s outdoor event season is in full swing. Enjoy weekly live music, art festivals, dance shows, and theater performances in lovely outdoor venues throughout the city.
Key Events: Boulder Comedy Festival, Colorado Shakespeare Festival, Boulder International Festival
July
Warm, sunny July days create ideal conditions for tubing down Boulder Creek or visiting the Boulder Reservoir for kayaking, paddle boarding, and boating. This month is also perfect for relaxing picnics or frisbee in Scott Carpenter Park.
Key Events: Pearl Street Arts Fest, Boulder Environmental/Nature/Outdoors Film Festival
August
Tourists flood into Boulder in August as families squeeze in late summer vacations while outdoor enthusiasts hit the trails. After a day of recreation, enjoy a cold beer at one of Boulder’s 20+ craft breweries.
Key Events: Boulder Craft Beer Festival, Bands on the Bricks
September
Fall is a magnificent time to be in Boulder. The weather is pleasantly mild, with vibrant fall colors on display, and accommodation prices drop from summer highs. One of the best activities in September is leaf-peeping; Coot Lake and Sawhill Ponds offer excellent opportunities to see bursts of autumn color.
Key Events: Downtown Boulder Fall Fest, Boulder Creek Hometown Festival, Buffalo Bicycle Classic
October
October brings a host of fall festivities as Boulder is surrounded by farmland, offering access to apple orchards, pumpkin patches, and farm stands. Check out local farms to indulge in seasonal produce. Halloween adds a touch of fun at the end of the month.
Key Events: Boulder Restaurant Week, Munchkin Masquerade
November
As temperatures drop and snow begins to fall in November, the sun still shines, creating visually stunning afternoons. Leading up to Thanksgiving, Boulder ushers in the holiday season with the annual illumination of holiday lights along Pearl Street.
Key Events: Switch on the Holidays, The Underground Comedy Showcase
December
In December, Boulder transforms into a winter wonderland as snow decorates the mountains, making it an ideal time for holiday getaways. Numerous festive events provide opportunities to celebrate the holiday spirit, accompanied by evening strolls along twinkling Pearl Street.
Key Events: St Nick on the Bricks, Chanukah on Pearl, Lights of December Parade
