June in Joplin averages a daily high of 30.2°C with nights around 18.8°C. Expect roughly 9.9 wet days totalling 140.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Joplin is September–October.
Based on JOPLIN REGIONAL AIRPORT, MO US (7.7km), 1995–2024. 30 years of June data.