March in Roswell averages a daily high of 18.5°C with nights around 6.3°C. Expect roughly 10.7 wet days totalling 121.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Roswell is September–November.
Based on ATLANTA DEKALB PEACHTREE AIRPORT, GA US (17.1km), 1995–2024. 26 years of March data.