August in Greeley averages a daily high of 32.3°C with nights around 14.3°C. Expect roughly 6.8 wet days totalling 38.6mm. 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. 28 years of August data.