June in Dundalk averages a daily high of 29.6°C with nights around 20.3°C. Expect roughly 10.4 wet days totalling 97.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Dundalk is April–May.
Based on MARYLAND SCIENCE CENTER, MD US (8.5km), 1995–2024. 23 years of June data.