July in Fort Smith averages a daily high of 34.3°C with nights around 22.7°C. Expect roughly 7 wet days totalling 87.1mm. 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 July data.