March in Decatur averages a daily high of 17.7°C with nights around 5.9°C. Expect roughly 9.6 wet days totalling 115.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Decatur is April–May.
Based on DECATUR 4 SE, AL US (5.6km), 1995–2024. 16 years of March data.