June in Union averages a daily high of 27.8°C with nights around 17.8°C. Expect roughly 10.9 wet days totalling 109.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Union is May–June.
Based on NEWARK LIBERTY INTERNATIONAL AIRPORT, NJ US (8.1km), 1995–2024. 30 years of June data.