May in Chattanooga averages a daily high of 23.2°C with nights around 14.3°C. Expect roughly 10.9 wet days totalling 110.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Chattanooga is April–June.
Based on LOOKOUT MTN POINT PARK, TN US (5.1km), 1995–2024. 28 years of May data.