August in Topeka averages a daily high of 31.9°C with nights around 19.5°C. Expect roughly 8.5 wet days totalling 112.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Topeka is September–October.
Based on TOPEKA ASOS, KS US (5.2km), 1995–2024. 30 years of August data.