April in Gary averages a daily high of 14.2°C with nights around 4.1°C. Expect roughly 11.1 wet days totalling 86.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Gary is May–September.
Based on INDIANA DUNES NATIONAL PARK, IN US (21.9km), 1995–2024. 27 years of April data.