Union, New Jersey, is best visited during the spring (April to June) and autumn (September to October) months.These seasons offer the most pleasant weather, with mild temperatures and lower humidity, making it ideal for exploring the local parks and outdoor attractions. You'll find fewer crowds compared to the peak summer months, and the natural scenery is particularly beautiful, especially in autumn when the foliage changes colour.For families, late spring or early autumn provides comfortable conditions for visiting local attractions like the Liberty Hall Museum or enjoying recreational activities at facilities such as the Union Sports Hub, without the intense heat of summer.