August in Schaumburg averages a daily high of 26.4°C with nights around 16.4°C. Expect roughly 10.8 wet days totalling 113.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Schaumburg is June–September.
Based on BARRINGTON 3 SW, IL US (11.3km), 1995–2024. 25 years of August data.