The weather tends to be crisp and is usually mild. Fall high temperatures in Crested Butte range from the 50s to low 60s. Lows are in the 20s and 30s. September and October are usually dry and sunny, but rain and snow are also possibilities. Average fall precipitation is 2.06 inches and average snowfall is 5.5 inches. Usually, the first frost hits Crested Butte in September. The first snow usually falls at the end of October.
During fall in the Gunnison Valley, most people start hikes or bike rides later in the morning to be outside during the warmest part of the day. If you plan to camp on your fall visit to Crested Butte, bring warm gear and clothes. You might wake up to a frosty camp!