About Monument, CO's Climate & Weather History

Monument, in Colorado, United States, is home to roughly 6,400 people in the Mountain Time Zone at 39.1°N latitude.

In 2025, Monument recorded an average annual temperature of 47°F. The hottest temperatures reached 91°F in August; the coolest were -24°F in January. Total precipitation for the year was 20 inches, with the wettest month being May. Snowfall for the year totaled approximately 17 inches.