June in Gary averages a daily high of 25.5°C with nights around 15.4°C. Expect roughly 11.8 wet days totalling 100.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Gary is May–September.
Based on INDIANA DUNES NATIONAL PARK, IN US (21.9km), 1995–2024. 25 years of June data.