September in Topeka averages a daily high of 27.8°C with nights around 14.3°C. Expect roughly 7 wet days totalling 82.9mm. Comfortable conditions for being outdoors all day.
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 September data.