March in Lewisville averages a daily high of 19.9°C with nights around 6.6°C. Expect roughly 8.9 wet days totalling 90mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Lewisville is March–April.
Based on GRAPEVINE DAM, TX US (12.1km), 1995–2024. 23 years of March data.