Question

what is the reason for a higher range of temprature in the interior of a continent

Answer 1

Eight degrees Fahrenheit. It may not sound like much—perhaps the difference between wearing a sweater and not wearing one on an early-spring day. But for the world in which we live, which climate experts project will be at least eight degrees warmer by 2100 should global emissions continue on their current path, this small rise will have grave consequences, ones that are already becoming apparent, for every ecosystem and living thing—including us.

Answer 2

because water has the highest heat capacity than the soil and rock so ocean take the much longer to heat or too cold than the size and rock
coastal area will have more moderate temperature than inland area because of the heat capacity of ocean