August in Bolingbrook averages a daily high of 28°C with nights around 17.3°C. Expect roughly 9.6 wet days totalling 110.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Bolingbrook is August–September.
Based on ROMEOVILLE WEATHER FORECAST OFFICE, IL US (10.6km), 1995–2024. 27 years of August data.