April in Tinley Park averages a daily high of 15.3°C with nights around 3.9°C. Expect roughly 12 wet days totalling 101mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Tinley Park is August–September.
Based on PARK FOREST WATER, IL US (12.4km), 1995–2024. 29 years of April data.