June in Green Bay averages a daily high of 24.3°C with nights around 12.8°C. Expect roughly 11.3 wet days totalling 106.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Green Bay is May–September.
Based on GREEN BAY BOTANICAL, WI US (6.4km), 1995–2024. 23 years of June data.