We can use an equation to convert from Celsius to Fahrenheit. Let F be the temperature in Fahrenheit and let C be the temperature in Celsius. F = (9C / 5) + 32 F = (9 x 39.0 / 5) + 32 F = 70.2 + 32 F = 102.2 degrees Fahrenheit The temperature is 102.2 degrees Fahrenheit.