June in Oak Lawn averages a daily high of 27.3°C with nights around 17.1°C. Expect roughly 11 wet days totalling 110.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Oak Lawn is August–September.
Based on CHICAGO MIDWAY AIRPORT 3 SW, IL US (3.3km), 1995–2024. 30 years of June data.