March in Huntsville averages a daily high of 18.3°C with nights around 6°C. Expect roughly 11.2 wet days totalling 135.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Huntsville is April–May.
Based on HUNTSVILLE INTNL AIRPORT, AL US (20.7km), 1995–2024. 30 years of March data.