March in Gary averages a daily high of 7.7°C with nights around -1.2°C. Expect roughly 10.7 wet days totalling 60mm. A hard month to visit for comfort alone.
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 March data.