Venus is the second closest planet to our Sun, and is the hottest planet in the solar system. The blistering temperature on Venus is due in part to the oppressive atmosphere that is 100 times heavier than that of Earth. The greenhouse gasses that smother the planet create a uniform and constant temperature on all sides of Venus.
Unlike a planet such as Earth, which has a variable temperature range, Venus' surface temperature remains constantly around 480 degrees Celsius, or 896 degrees Fahrenheit. This uniform temperature is due to two primary causes -- the tilt of the planet on its axis and the atmospheric conditions. The tilt of Venus is only 3 degrees, compared to Earth, which is tilted at 23 degrees. The small degree of tilt allows for the maintenance of the planet's temperature. The incredibly thick atmosphere composed of carbon dioxide also contributes by holding in heat, so that even the side facing away from the sun remains hot.