How many degrees Fahrenheit does it gave to be to form a metamorphic rock?

Metamorphic rocks typically form under conditions of high temperature and pressure, usually at temperatures ranging from about 300°F to 1,500°F (150°C to 800°C). The specific temperature required can vary based on the type of rock and the minerals involved. Generally, temperatures above 600°F (315°C) are conducive to significant metamorphic changes.