How high a temperature can cactus survive?

Cacti are well-adapted to survive in extreme heat, with many species thriving in temperatures that can exceed 100°F (38°C). Some can tolerate temperatures as high as 120°F (49°C) for short periods. However, prolonged exposure to extreme heat, especially without sufficient water, can stress the plant and lead to damage. Overall, their resilience varies by species and environmental conditions.