March in Fort Smith averages a daily high of 18.5°C with nights around 5.7°C. Expect roughly 10.1 wet days totalling 107mm. Comfortable conditions for being outdoors all day.
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 March data.