To convert degrees Celsius to degrees Fahrenheit, you can use the following formula:

°F = (°C × 9/5) + 32

So, to convert 15.6 degrees Celsius to Fahrenheit, we have:

°F = (15.6 × 9/5) + 32

°F = (140.4 / 5) + 32

°F = 28.08 + 32

°F = 60.08

Therefore, 15.6 degrees Celsius is equal to 60.08 degrees Fahrenheit.