Uranus is roughly 15 times the mass of the Earth, although it is has a density only similar to water at 1.27 g/cm^3, mostly containing gaseous water, ammonia and methane. Uranus, seventh planet in distance from the Sun and the least massive of the solar system’s four giant, or Jovian, planets.
Uranus' is always cold and is the coldest planet. An icy atmosphere Like Neptune, Uranus, discovered in 1781 , is known as an "ice giant," in a slightly different category from Saturn and Jupiter.

The atmosphere of Uranus is composed primarily of hydrogen and helium.At depth it is significantly enriched in volatiles (dubbed "ices") such as water, ammonia and methane.The opposite is true for the upper atmosphere, which contains very few gases heavier than hydrogen and helium due to its low temperature. Uranus is the seventh planet from the Sun in the Solar System.It is a gas giant.It is the third largest planet in the solar system. Uranus is an ice giant, meaning it does not have a solid surface and what is called it's 'surface' is actually a layer of clouds that lies above what may be a layer of liquid water and a core of rock at the center of the planet.The average temperature of Uranus' surface is 49 kelvin or 224 Celsius. Moons Uranus has 27 moons. Uranus has the coldest atmospheric temperature of any planet in the solar system, around -224C (-371F). Typically, Saturn is the only planet that is pictured with rings. Winds are retrograde at the equator, blowing in the reverse direction of the planet’s rotation. Uranus is the coldest planet in our Solar System, with a lowest recorded temperature of -224°C. Although Jupiter, Neptune, and Uranus have equally fascinating ring systems, they can only be observed with powerful telescopes. Uranus' planetary atmosphere, with a minimum temperature of 49K (-224.2 degrees Celsius) makes it even colder than Neptune in some places. At the core of the planet, temperatures are believed to reach as high as 11,700 °C.

Wind speeds on Uranus range from 90 to 360 mph and the planet's average temperature is a frigid -353 degrees F. The coldest temperature found in Uranus' lower atmosphere so far is -371 degrees F., which rivals Neptune's frigid temperatures. Uranus has more than two dozen moons, five of which (Umbriel, Miranda, Ariel, Titania, and Oberon) are relatively large, and a system of narrow rings. Despite its distance from the Sun, the largest contributing factor to its frigid nature has to do with its core. Uranus ring system has a temperature of -196°C (77 Kelvin), just about the boiling point of liquid nitrogen.

This radiation temperature is equal to the physical temperature of the atmosphere at a pressure of about 0.4 bar. On average, Uranus radiates the same amount of energy as an ideal, perfectly absorbing surface at a temperature of 59.1 kelvin s (K; −353 °F, −214 °C).

This is because Uranus is tilted over onto its side, rotating at an angle of 99-degrees.
Despite the fact that its equator faces away from the sun, the temperature distribution on Uranus is much like other planets, with a warmer equator and cooler poles. Wind speeds can reach up to 560 miles per hour (900 kilometers per hour) on Uranus. Temperatures in its interior are lower than those found in the …