2025 Summer Calendar Of Events In Colorado Time. There are hundreds of cool things to do during colorado's hottest season, including catching outdoor films, food and art fests, markets and concerts. Summer solstice 2025 (beginning of astronomical summer) on the day of the summer (june) solstice, the solar disk, moving along the ecliptic, will fall into its northernmost.
Submissions are open for the 2025 annual calendar contest. Discover 100’s of us colorado cycling.