March in Union averages a daily high of 11.1°C with nights around 1.6°C. Expect roughly 10.6 wet days totalling 99.6mm. Demanding conditions — pack for it and plan indoor options.
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 March data.