Crested Butte tends to be cooler and wetter than Gunnison due to its high elevation and mountainous surroundings. Weather in Crested Butte is similar to other high-altitude mountain towns like Aspen, Telluride, Winter Park and Breckenridge.
In summer, expect highs in the 70s and 80s and lows in the 30s and 40s. Monsoon season arrives in July and August. Expect afternoon thunderstorms during these months. Fall is much drier, with precipitation being rare. Highs are in the 50s and 60s, with lows dipping below freezing. Winter brings snowfall and cold temps, with highs in the 20s and 30s and lows hovering around 0-10 degrees. When it’s not snowing, expect crisp, sunny days under Colorado’s famous bluebird skies. Spring is the most variable time of year in Crested Butte (and Colorado in general). It can be sunny and 65 degrees one day, and snowy and 40 degrees the next.