June in Fort Smith averages a daily high of 31.8°C with nights around 20.5°C. Expect roughly 8.5 wet days totalling 117mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Fort Smith is April–May.
Based on FORT SMITH REGIONAL AIRPORT, AR US (6.6km), 1995–2024. 30 years of June data.