June in Greeley averages a daily high of 30.3°C with nights around 12.2°C. Expect roughly 7.9 wet days totalling 45.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Greeley is September–October.
Based on GREELEY UNC, CO US (2.5km), 1995–2024. 29 years of June data.