June in Fort Collins averages a daily high of 27.9°C with nights around 11.7°C. Expect roughly 9.3 wet days totalling 43mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Fort Collins is September–October.
Based on FORT COLLINS, CO US (1km), 1995–2024. 30 years of June data.