July in Grand Island averages a daily high of 31.2°C with nights around 18.6°C. Expect roughly 8.4 wet days totalling 79.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Grand Island is September–October.
Based on GRAND ISLAND CENTRAL NE REGIONAL AIRPORT, NE US (4.7km), 1995–2024. 30 years of July data.