August in Ankeny averages a daily high of 29°C with nights around 16.1°C. Expect roughly 9.5 wet days totalling 105.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Ankeny is September–October.
Based on ANKENY, IA US (3.7km), 1995–2024. 24 years of August data.